# United Kingdom Shell Amino Acid Racemization Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/20287 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/aar/penkman2007uk/penkman2007uk.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Other Collections # # Parameter_Keywords: #-------------------- # Contribution_Date # Date: 2016-06-14 #-------------------- # Title # Study_Name: United Kingdom Shell Amino Acid Racemization Data #-------------------- # Investigators # Investigators: Penkman, K.E.H.; Preece, R.C.; Keen, D.H.; Maddy, D.; Schreve, D.C.; Collins, M.J. #-------------------- # Description_and_Notes # Description: Amino acid racemization (D/L) data on freshwater gastropod (Bithynia, Valvata) and bivalve (Corbicula) shells from sites in the United Kingdom. # Data include extent of amino acid racemization (D/L) for aspartic acid (Asx), glutamic acid (Glx), serine (Ser), alanine (Ala) and valine (Val). #-------------------- # Publication # Authors: K.E.H. Penkman, R.C. Preece, D.H. Keen, D. Maddy, D.C. Schreve, M.J. Collins # Published_Date_or_Year: 2007-11-01 # Published_Title: Testing the aminostratigraphy of fluvial archives: the evidence from intra-crystalline proteins within freshwater shells # Journal_Name: Quaternary Science Reviews # Volume: 26 # Edition: # Issue: 22-24 # Pages: 2958-2969 # Report_Number: # DOI: 10.1016/j.quascirev.2007.06.034 # Online_Resource: http://www.sciencedirect.com/science/article/pii/S0277379107002570 # Full_Citation: # Abstract: Until recently few studies of amino acid racemization of fossil bivalves and gastropods collected from river terrace deposits in Europe were based on the analysis of the intra-crystalline fraction. Instead they were based on the epimerization (racemization) of a single amino acid, isoleucine, and its inter-conversion to alloisoleucine. This paper presents data from the analysis of the intra-crystalline fraction of the shells, using a preparation technique of sample bleaching to remove the leachable matrix, thus leaving a component that exhibits closed-system behaviour. Reverse-phase HPLC separation with fluorescence detection allows the interpretation of four amino acids in detail: aspartic acid, glutamic acid, alanine and valine. The intra-crystalline fraction offers greater potential for improved resolution, especially when combined with the analysis of multiple amino acid d/l values, which racemize at different rates. This is explored using three species of freshwater gastropods (Bithynia tentaculata and troschelii, Valvata piscinalis) and the bivalve Corbicula. Sites of different ages within the Lower Thames river terrace sequence are used as a stratigraphical framework, with samples from other southern UK sites providing supplementary evidence. The results indicate better resolution using the intra-crystalline fraction over that obtained using unbleached shells, with differentiation possible at sites of up to MIS 7 age. However, for older sites, although values are always higher, the separation is less successful. A species effect has been identified between the gastropod shells. Despite the analysis of intra-crystalline protein, amino acid data from Corbicula remain problematical. Preliminary data on the opercula from Bithynia indicate that better resolution is possible, particularly at older sites. #------------------ # Funding_Agency # Funding_Agency_Name: NERC # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: Wellcome Trust # Grant: GR076905MA #------------------ # Site_Information # Site_Name: UK2007AAR # Location: Europe>Northern Europe>British Isles # Country: United Kingdom # Northernmost_Latitude: 53.0 # Southernmost_Latitude: 50.0 # Easternmost_Longitude: 4.0 # Westernmost_Longitude: -4.0 # Elevation: m #------------------ # Data_Collection # Collection_Name: Peckman2007AAR # Earliest_Year: 700000 # Most_Recent_Year: 0 # Time_Unit: Cal. year BP # Core_Length: m # Notes: #------------------ # # # Lab: NEaar (University of York) # Lab PI: Penkman, K.E.H. # Preparation date: 2001 to 2007 # Pretreatment: repeated sonication in MilliQ H2O, powdered. Unbleached (u) and bleached (b) 48 hours # AA fraction = AMINO FRACTION: FAA = free amino acids; THAA = total hydrolysable amino acids # Hydrolysis procedure: 6 hr (6) or 24 hr (24)at 110°C in 10 µL/mg of 7 M HCl under N2 # Bleach: Signified by "b" # Analytical method: RPLC # Instrumental programming: # Concentration is based on internal calibration with L-hArg # Area or height ratio: Area # Blank corrections: none # Response factors: lab standard # Data screening criteria: Rejection criteria: # no samples rejected for reporting. # samples rejected for calculation of means indicated in data table. # # Collector: various # # Data: Extent of amino acid racemization (D/L) for aspartic acid (Asx), glutamic acid (Glx), serine (Ser), alanine (Ala) and valine (Val) in Bithynia, Valvata and Corbicula shells from British sites FAA = free amino acid fraction THAA = total hydrolysable amino acid fraction LAB LAB NUMBER COUNTRY SITE NAME PROVENANCE / SAMPLE I.D. UK National Grid Reference Latitude Longitude SAMPLE TYPE GENUS SPECIES n (number of injections) FAA Asx D/L x FAA Asx D/L σ FAA Glx D/L x FAA Glx D/L σ FAA Ser D/L x FAA Ser D/L σ FAA Ala D/L x FAA Ala D/L σ FAA Val D/L x FAA Val D/L σ n (number of injections) hydrolysis time THAA Asx D/L x THAA Asx D/L σ THAA Glx D/L x THAA Glx D/L σ THAA Ser D/L x THAA Ser D/L σ THAA Ala D/L x THAA Ala D/L σ THAA Val D/L x THAA Val D/L σ Additional information NEaar 1209b England Acle, Norfolk 1995 (modern) TG 412101 52º 38' 04.55" 001º 33' 53.99" opercula Bithynia tentaculata 2 0.00 0.00 0.00 0.00 2 0.09 0.01 0.04 0.00 0.09 0.00 0.04 0.00 0.02 0.00 NEaar 0274u England Coe Fen Cambridge coll 1919 ex UMZC (modern) shell Valvata piscinalis 2 0.00 0.00 0.00 0.00 0.00 0.00 0.87 0.02 0.48 0.01 2 6 0.05 0.00 0.04 0.00 0.02 0.00 0.08 0.00 0.04 0.00 NEaar 0275u England Coe Fen Cambridge coll 1919 ex UMZC (modern) shell Valvata piscinalis 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.34 2 6 0.05 0.00 0.03 0.00 0.02 0.00 0.04 0.00 0.04 0.02 NEaar 0276u England Coe Fen Cambridge coll 1919 ex UMZC (modern) shell Valvata piscinalis 2 0.09 0.00 0.00 0.00 0.06 0.00 0.22 0.01 2 6 0.05 0.00 0.03 0.00 0.02 0.00 0.07 0.00 0.15 0.02 NEaar 0279u England Stratford-upon-Avon 23.5.78 (modern) shell Valvata piscinalis 2 0.17 0.01 0.00 0.00 0.10 ND 0.00 0.00 0.00 0.00 2 6 0.16 0.00 0.07 0.00 0.10 0.00 0.08 0.01 0.05 0.07 NEaar 0280u England Stratford-upon-Avon 23.5.78 (modern) shell Valvata piscinalis 2 0.25 0.00 0.00 0.00 0.24 0.01 0.07 0.01 0.00 0.00 2 6 0.25 0.00 0.07 0.00 0.23 0.00 0.08 0.00 0.05 0.00 NEaar 0281u England Stratford-upon-Avon 23.5.78 (modern) shell Valvata piscinalis 2 0.11 0.03 0.24 ND 0.07 0.03 0.00 0.00 0.00 0.00 1 6 0.17 ND 0.05 ND 0.12 ND 0.08 ND 0.05 ND NEaar 0525u England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.34 0.00 0.08 0.00 0.53 0.00 0.15 0.00 0.00 0.00 2 24 0.39 0.00 0.12 0.00 0.42 0.01 0.16 0.00 0.05 0.01 NEaar 0526u England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.31 0.00 0.08 0.00 0.47 0.00 0.19 0.00 0.00 0.00 2 24 0.24 0.00 0.10 0.00 0.12 0.00 0.10 0.00 0.04 0.00 NEaar 0527u England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.31 0.01 0.08 0.01 0.46 0.00 0.16 0.00 0.00 0.00 2 24 0.35 0.05 0.09 0.00 0.36 0.01 0.16 0.00 0.04 0.00 NEaar 0528u England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.32 0.00 0.00 0.00 0.45 0.01 0.14 0.01 0.00 0.00 2 24 0.34 0.02 0.08 0.00 0.26 0.00 0.13 0.01 0.05 ND NEaar 0075u England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Valvata piscinalis 2 0.45 0.00 0.16 0.00 0.80 0.05 0.25 0.00 0.00 0.00 2 6 0.36 0.00 0.09 0.00 0.32 0.00 0.15 0.00 0.00 0.00 NEaar 0307u England Deeping St. James Sample 8 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.52 0.01 0.20 0.01 0.77 0.03 0.31 0.01 0.00 0.00 2 6 0.46 0.00 0.15 0.00 0.37 0.01 0.20 0.00 0.08 0.00 NEaar 0475u England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.38 0.03 0.00 0.00 0.47 0.21 0.23 0.02 0.23 0.04 2 6 0.33 0.03 0.14 0.01 0.29 0.16 0.17 0.01 0.00 0.00 NEaar 0476u England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.44 0.01 0.00 0.00 0.71 0.00 0.22 0.01 0.00 0.00 2 6 0.41 0.00 0.13 0.00 0.61 0.01 0.21 0.00 0.00 0.00 NEaar 0477u England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.43 0.00 0.00 0.00 0.25 0.36 0.00 0.00 0.00 0.00 2 6 0.37 0.00 0.00 0.00 0.00 0.00 0.29 0.00 0.00 0.00 NEaar 0478u England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.42 0.00 0.00 0.00 0.64 0.01 0.24 0.02 0.00 0.00 2 6 0.42 0.00 0.18 0.00 0.66 0.02 0.14 ND 0.00 0.00 NEaar 0479u England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.46 0.01 0.18 0.00 0.53 0.01 0.26 0.00 0.11 0.01 2 6 0.56 0.00 0.30 0.00 0.68 0.01 0.34 0.02 0.00 0.00 NEaar 0067u England Latton lower levels, 20/08/1999 SY 081965 50°45′38.84″N 003°18′15.64″W shell Valvata piscinalis 2 0.55 0.01 0.23 0.00 0.64 0.02 0.37 0.00 0.07 0.10 2 6 0.14 0.00 0.04 0.00 0.02 0.00 0.10 0.01 0.03 0.00 NEaar 0290u England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.55 0.00 0.23 0.00 0.57 0.01 0.43 0.01 0.15 0.00 2 6 0.54 0.00 0.20 0.00 0.69 0.00 0.35 0.00 0.13 0.00 NEaar 0291u England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.60 0.00 0.25 0.00 0.78 0.01 0.49 0.00 0.16 0.01 2 6 0.51 0.00 0.19 0.00 0.66 0.00 0.41 0.01 0.12 0.00 NEaar 0292u England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.61 0.01 0.25 0.00 0.82 0.00 0.42 0.01 0.15 0.01 2 6 0.48 0.00 0.18 0.00 0.25 0.00 0.32 0.00 0.13 0.03 NEaar 1179u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.64 0.01 0.23 0.00 0.83 0.00 0.42 0.03 0.26 0.07 2 24 0.61 0.00 0.20 0.00 0.39 0.01 0.36 0.00 0.20 0.02 NEaar 1180u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.67 0.00 0.24 0.01 0.85 0.01 0.46 0.01 0.33 0.06 2 24 0.34 0.00 0.12 0.00 0.16 0.00 0.15 0.00 0.06 0.00 NEaar 1181u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.61 0.00 0.22 0.00 0.64 0.01 0.35 0.00 0.37 0.08 2 24 0.57 0.00 0.21 0.01 0.41 0.00 0.29 0.02 0.16 0.03 NEaar 1182u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.62 0.01 0.23 0.00 0.81 0.00 0.39 0.02 0.27 0.00 2 24 0.51 0.00 0.22 0.00 0.33 0.00 0.28 0.01 0.15 0.01 NEaar 1183u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.64 0.01 0.24 0.00 0.70 0.04 0.38 0.03 0.47 0.11 2 24 0.54 0.02 0.18 0.00 0.28 0.00 0.22 0.01 0.11 0.00 NEaar 1184u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.59 0.00 0.21 0.02 0.70 0.02 0.35 0.02 0.23 0.06 2 24 0.45 0.03 0.15 0.00 0.22 0.00 0.21 0.01 0.12 0.01 NEaar 1185u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.66 0.04 0.22 ND 0.68 0.00 0.44 0.01 0.28 0.04 2 24 0.53 0.00 0.18 0.00 0.38 0.00 0.28 0.01 0.15 0.02 NEaar 1186u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.61 0.00 0.23 0.01 0.77 0.00 0.38 0.03 0.19 0.07 2 24 0.58 0.00 0.19 0.00 0.48 0.03 0.35 0.00 0.17 0.01 NEaar 1187u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.57 0.00 0.00 0.00 0.55 0.02 0.35 0.00 0.53 0.02 2 24 0.18 0.04 0.29 0.05 0.03 0.01 0.05 0.01 0.02 0.00 NEaar 1188u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.58 0.00 0.21 0.01 0.77 0.01 0.43 0.00 0.16 0.00 2 24 0.34 0.00 0.13 0.00 0.13 0.00 0.13 0.01 0.06 0.00 NEaar 1189u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.60 0.02 0.22 0.00 0.64 0.02 0.37 0.01 0.26 0.05 2 24 0.54 0.00 0.18 0.00 0.38 0.01 0.28 0.01 0.13 0.01 NEaar 1190u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.59 0.01 0.24 0.00 0.57 0.15 0.39 0.01 0.26 0.01 2 24 0.45 0.00 0.12 0.00 0.12 0.01 0.21 0.01 0.15 0.02 NEaar 1191u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.57 0.01 0.20 0.01 0.53 0.11 0.37 0.00 0.24 0.01 2 24 0.39 0.00 0.14 0.00 0.23 0.01 0.16 0.00 0.07 0.00 NEaar 1192u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.54 0.01 0.21 0.00 0.38 0.00 0.34 0.01 0.24 0.02 2 24 0.53 0.01 0.18 0.00 0.26 0.02 0.26 0.00 0.14 0.01 NEaar 1193u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.58 0.01 0.23 0.00 0.70 0.06 0.40 0.01 0.22 0.00 2 24 0.45 0.03 0.16 0.00 0.29 ND 0.21 0.01 0.09 0.01 NEaar 0297u England Aveley Area 6, Purfleet Rd TQ 552808 51°30′17.38″N 000°14′05.30″E shell Valvata piscinalis 2 6 0.42 0.02 0.16 0.00 0.16 0.19 0.28 0.03 0.07 0.08 NEaar 0299u England Aveley Area 6, Purfleet Rd TQ 552808 51°30′17.38″N 000°14′05.30″E shell Valvata piscinalis 2 0.54 0.06 0.00 0.00 0.00 0.00 0.37 0.01 0.00 0.00 2 6 0.57 0.01 0.25 0.00 0.33 0.01 0.34 0.04 0.14 0.01 NEaar 0855u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.67 0.00 0.34 0.00 0.67 0.00 0.43 0.00 0.18 0.00 2 24 0.52 0.02 0.23 0.00 0.16 0.00 0.28 0.00 0.13 0.01 NEaar 0856u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.55 0.01 0.36 ND 0.46 0.14 0.42 0.01 0.15 0.00 2 24 0.39 0.01 0.14 0.00 0.07 0.00 0.23 0.00 0.08 0.00 NEaar 0857u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.69 0.00 0.37 0.00 0.73 0.02 0.45 0.00 0.17 0.00 2 24 0.51 0.00 0.25 0.00 0.19 0.01 0.32 0.01 0.12 0.00 NEaar 0858u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.69 0.00 0.37 0.00 0.78 0.01 0.44 0.01 0.17 0.00 2 24 0.56 0.00 0.26 0.00 0.21 0.00 0.33 0.00 0.15 0.00 NEaar 0295u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Valvata piscinalis 2 0.72 0.03 0.44 0.01 0.27 0.38 0.54 0.01 0.17 0.00 2 6 0.62 0.04 0.36 0.01 0.32 0.03 0.44 0.03 0.18 0.01 NEaar 0296u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Valvata piscinalis 2 0.73 0.01 0.49 0.01 0.53 0.02 0.48 0.01 0.21 0.01 2 6 0.62 0.01 0.35 0.01 0.31 0.01 0.43 0.01 0.20 0.00 NEaar 0490u England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.70 0.00 0.41 0.01 0.70 0.03 0.50 0.01 0.26 0.02 2 24 0.70 0.01 0.36 0.01 0.38 ND 0.43 0.00 0.18 0.02 NEaar 0491u England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.72 0.00 0.42 0.01 0.75 0.00 0.48 0.00 0.23 0.01 2 24 0.63 0.02 0.34 ND 0.37 0.02 0.44 0.02 0.18 0.02 NEaar 0492u England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.70 0.01 0.39 0.01 0.68 0.10 0.54 0.01 0.25 0.00 2 24 0.58 0.04 0.30 0.00 0.25 0.01 0.43 0.00 0.20 0.00 NEaar 0493u England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.70 0.00 0.37 0.00 0.67 0.08 0.60 0.07 0.39 0.05 2 24 0.70 0.00 0.33 ND 0.46 0.01 0.47 0.02 0.29 0.03 NEaar 0494u England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.73 0.00 0.43 0.01 0.67 0.00 0.52 0.00 0.27 0.01 2 24 0.65 0.00 0.37 0.00 0.40 ND 0.46 0.01 0.23 0.01 NEaar 0495u England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.73 0.00 0.44 0.01 0.73 0.04 0.53 0.00 0.26 0.02 2 24 0.66 0.01 0.38 0.00 0.49 0.02 0.46 0.00 0.23 0.01 NEaar 0496u England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.72 0.00 0.44 0.01 0.73 0.05 0.54 0.00 0.26 0.00 2 24 0.64 0.06 0.36 0.01 0.46 0.01 0.49 0.00 0.26 0.01 NEaar 0497u England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.72 0.02 0.46 0.01 0.74 0.01 0.50 0.02 0.35 0.03 2 24 0.62 0.02 0.39 0.00 0.50 0.02 0.47 0.01 0.30 0.05 NEaar 0594u England Hoxne 2000 Back Pit (12) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.71 0.01 0.40 0.01 0.48 0.00 0.54 0.01 0.22 0.00 2 24 0.47 0.00 0.25 0.00 0.15 0.00 0.28 0.01 0.16 0.00 NEaar 0595u England Hoxne 01 (50) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis (tall) 2 0.74 0.00 0.49 0.00 0.72 0.05 0.56 0.00 0.29 0.01 2 24 0.44 0.00 0.22 0.00 0.07 0.00 0.32 0.01 0.17 0.00 NEaar 0596u England Hoxne 01 (50) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis (flat) 2 0.76 0.00 0.52 0.00 0.76 0.02 0.57 0.00 0.27 0.01 2 24 0.24 0.00 0.10 0.00 0.02 0.00 0.23 0.01 0.09 0.02 NEaar 0898u England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.77 0.00 0.45 0.00 0.00 0.00 0.67 0.00 0.28 0.00 2 24 0.57 0.07 0.27 0.00 0.10 0.01 0.35 0.00 0.22 0.02 NEaar 0899u England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.79 0.01 0.49 0.00 0.00 0.00 0.66 0.01 0.30 0.01 2 24 0.67 0.00 0.44 0.00 0.26 0.00 0.55 0.00 0.30 0.01 NEaar 0900u England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.77 0.00 0.47 0.00 0.44 0.02 0.67 0.01 0.29 0.01 2 24 0.59 0.00 0.37 0.00 0.18 0.00 0.48 0.00 0.24 0.00 NEaar 0901u England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.82 0.00 0.60 0.00 0.37 0.01 0.67 0.00 0.31 0.00 2 24 0.69 0.00 0.45 0.00 0.25 0.00 0.58 0.00 0.30 0.00 NEaar 0128u England Stratford-upon-Avon 23.5.78 (modern) shell Bithynia tentaculata 2 0.00 0.00 0.00 0.00 0.12 0.00 0.00 0.00 0.00 0.00 2 6 0.11 0.00 0.03 0.00 0.06 0.00 0.03 0.00 0.00 0.00 NEaar 0129u England Stratford-upon-Avon 23.5.78 (modern) shell Bithynia tentaculata 2 0.00 0.00 0.00 0.00 0.17 0.00 0.00 0.00 0.00 0.00 2 6 0.15 0.00 0.04 0.00 0.11 0.00 0.04 0.00 0.00 0.00 NEaar 0130u England Stratford-upon-Avon 23.5.78 (modern) shell Bithynia tentaculata 2 0.09 ND 0.10 0.00 0.00 0.00 0.36 0.05 0.00 0.00 1 6 0.04 ND 0.02 ND 0.01 ND 0.02 ND 0.02 ND NEaar 0131u England Stratford-upon-Avon 23.5.78 (modern) shell Bithynia tentaculata 2 0.11 0.01 0.08 0.00 0.13 0.00 0.56 0.01 0.00 0.00 1 6 0.03 ND 0.02 ND ND ND 0.04 ND 0.02 ND NEaar 0272u England Stratford-upon-Avon 23.5.78 (modern) shell Bithynia tentaculata 2 0.19 0.00 0.00 0.00 0.21 0.00 0.08 ND 0.00 0.00 2 6 0.17 0.00 0.04 0.00 0.16 0.00 0.06 0.03 0.04 0.01 NEaar 0273u England Stratford-upon-Avon 23.5.78 (modern) shell Bithynia tentaculata 2 0.27 0.00 0.00 0.00 0.34 0.03 0.09 0.01 0.00 0.00 2 6 0.25 0.00 0.06 0.00 0.23 0.00 0.08 0.00 0.00 0.00 NEaar 0480u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.35 0.00 0.09 0.00 0.50 0.00 0.10 0.00 0.00 0.00 2 6 0.28 0.00 0.07 0.00 0.38 0.00 0.09 0.00 0.03 0.00 NEaar 0481u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.34 0.00 0.00 0.00 0.47 0.01 0.08 0.00 0.00 0.00 2 6 0.30 0.00 0.10 0.00 0.38 0.00 0.12 0.00 0.06 0.08 NEaar 0482u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.32 0.01 0.09 0.00 0.51 0.01 0.12 0.01 0.00 0.00 2 6 0.23 0.00 0.06 0.00 0.27 0.00 0.09 0.00 0.06 0.00 NEaar 0520u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.34 0.01 0.10 0.00 0.53 0.01 0.17 0.01 0.00 0.00 2 24 0.30 0.00 0.09 0.00 0.35 0.00 0.13 0.00 0.05 0.00 NEaar 0521u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.36 0.01 0.08 0.00 0.52 0.01 0.13 0.01 0.00 0.00 2 24 0.36 0.00 0.09 0.00 0.35 0.01 0.13 0.00 0.05 0.00 NEaar 0522u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.35 0.00 0.00 0.00 0.53 0.00 0.13 0.01 0.00 0.00 2 24 0.34 0.01 0.09 0.00 0.34 0.01 0.13 0.01 0.04 0.00 NEaar 0523u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.32 0.01 0.00 0.00 0.49 0.00 0.12 0.00 0.00 0.00 2 24 0.36 0.01 0.09 0.00 0.38 0.00 0.11 0.00 0.00 0.00 NEaar 0524u England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.37 0.01 0.10 0.00 0.57 0.01 0.15 0.00 0.00 0.00 2 24 0.32 0.01 0.09 0.00 0.39 0.00 0.15 0.00 0.04 0.00 NEaar 0247u England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.50 0.00 0.18 0.01 0.76 0.01 0.23 0.00 0.00 0.00 2 6 0.50 0.01 0.15 0.01 0.45 0.01 0.17 0.00 0.11 0.01 NEaar 0248u England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.48 0.01 0.16 0.00 0.76 0.00 0.21 0.00 0.23 0.33 2 6 0.45 0.00 0.15 0.00 0.43 0.01 0.19 0.02 0.12 0.03 NEaar 0884u England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.46 0.00 0.19 0.00 0.76 0.00 0.22 0.00 0.08 0.00 2 24 0.39 0.00 0.16 0.00 0.36 0.00 0.19 0.00 0.08 0.00 NEaar 0885u England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.49 0.00 0.20 0.00 0.73 0.00 0.23 0.00 0.10 0.00 2 24 0.44 0.00 0.16 0.00 0.42 0.05 0.20 0.02 0.09 0.00 NEaar 0260u England Shropham Ip TM 005938 52°30′18.78″N 000°57′10.00″E shell Bithynia tentaculata 2 0.53 0.00 0.19 0.02 0.83 0.00 0.29 0.00 0.10 0.00 2 6 0.43 0.00 0.14 0.00 0.44 0.02 0.20 0.00 0.09 0.00 NEaar 0261u England Shropham Ip TM 005938 52°30′18.78″N 000°57′10.00″E shell Bithynia tentaculata 2 0.55 0.00 0.19 0.01 0.76 0.03 0.30 0.00 0.12 0.00 2 6 0.50 0.01 0.16 0.00 0.48 0.04 0.22 0.01 0.13 0.04 NEaar 0895u England Coston Ip IIb, 15-25 cm TM 062065 51°43′09.49″N 000°59′01.71″E shell Bithynia tentaculata 2 0.58 0.00 0.23 0.00 0.82 0.00 0.31 0.00 0.12 0.00 2 24 0.47 0.00 0.19 0.00 0.56 0.01 0.24 0.00 0.15 0.01 NEaar 0896u England Coston Ip IIb, 15-25 cm TM 062065 51°43′09.49″N 000°59′01.71″E shell Bithynia tentaculata 2 0.60 0.00 0.22 0.00 0.74 0.09 0.28 0.00 0.11 0.00 2 24 0.49 0.00 0.20 0.00 0.35 0.00 0.24 0.01 0.13 0.01 NEaar 0897u England Coston Ip IIb, 15-25 cm TM 062065 51°43′09.49″N 000°59′01.71″E shell Bithynia tentaculata 2 0.60 0.00 0.24 0.00 0.68 0.01 0.32 0.00 0.12 0.00 2 24 0.46 0.00 0.19 0.00 0.37 0.01 0.22 0.00 0.09 0.01 NEaar 0957u England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Bithynia tentaculata 2 0.59 0.00 0.21 0.01 0.70 0.00 0.27 0.00 0.10 0.00 2 24 0.47 0.00 0.17 0.00 0.33 0.00 0.22 0.00 0.17 0.00 NEaar 0305u England Deeping St. James sample 8 TF 185081 52°39′27.66″N 000°14′58.17″W shell Bithynia tentaculata 2 0.42 0.06 0.00 0.00 0.59 0.00 0.29 0.02 0.00 0.00 2 6 0.45 0.01 0.17 0.00 0.36 0.01 0.23 0.01 0.10 0.00 NEaar 0306u England Deeping St. James sample 8 TF 185081 52°39′27.66″N 000°14′58.17″W shell Bithynia tentaculata 2 0.55 0.00 0.22 0.02 0.74 0.01 0.29 0.00 0.10 0.00 2 6 0.46 0.02 0.19 0.00 0.50 0.00 0.25 0.01 0.11 0.00 NEaar 0531u England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Bithynia tentaculata 2 0.59 0.00 0.26 0.00 0.66 0.02 0.32 0.00 0.12 0.02 2 24 0.50 0.01 0.21 0.00 0.41 0.00 0.24 0.00 0.00 0.00 NEaar 0287u England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.58 0.00 0.28 0.00 0.67 0.03 0.44 0.00 0.16 0.00 2 6 0.48 0.00 0.22 0.00 0.50 0.00 0.32 0.00 0.12 0.00 NEaar 0288u England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.60 0.00 0.28 0.00 0.72 0.07 0.37 0.00 0.14 0.00 2 6 0.55 0.00 0.25 0.00 0.57 0.00 0.35 0.00 0.13 0.00 NEaar 0289u England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.58 0.00 0.28 0.00 0.53 0.01 0.39 0.01 0.15 0.01 2 6 0.51 0.01 0.25 0.00 0.56 0.01 0.36 0.01 0.15 0.01 NEaar 1140u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.63 0.00 0.28 0.00 0.68 0.01 0.40 0.00 0.33 0.01 2 24 0.59 0.00 0.23 0.00 0.47 0.01 0.35 0.01 0.16 0.01 NEaar 1141u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.61 0.00 0.28 0.00 0.74 0.05 0.42 0.01 0.22 0.00 2 24 0.54 0.00 0.23 0.00 0.30 0.01 0.34 0.00 0.17 0.00 NEaar 1142u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.59 0.00 0.27 0.00 0.80 0.01 0.46 0.00 0.28 0.01 2 24 0.45 0.00 0.20 0.00 0.30 0.00 0.29 0.01 0.12 0.01 NEaar 1143u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.62 0.00 0.27 0.00 0.94 0.01 0.39 0.00 0.16 0.01 2 24 0.53 0.00 0.19 0.00 0.16 0.01 0.27 0.00 0.10 0.01 NEaar 1144u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.59 0.01 0.27 0.00 0.20 0.00 0.31 0.00 0.28 0.02 2 24 0.54 0.00 0.24 0.00 0.41 0.01 0.37 0.00 0.19 0.04 NEaar 1145u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.64 0.00 0.25 0.00 0.93 0.00 0.43 0.00 0.22 0.00 2 24 0.47 0.06 0.21 0.01 0.27 0.23 0.34 0.01 0.17 0.03 NEaar 1146u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.61 0.00 0.23 0.00 0.83 0.01 0.36 0.00 0.20 0.00 2 24 0.54 0.01 0.22 0.00 0.38 0.01 0.30 0.01 0.14 0.00 NEaar 1147u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.61 0.00 0.29 0.00 0.90 0.00 0.43 0.00 0.21 0.00 2 24 0.49 0.00 0.21 0.00 0.17 0.01 0.33 0.01 0.15 0.01 NEaar 1148u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.60 0.01 0.28 0.00 0.82 0.02 0.42 0.00 0.28 0.04 2 24 0.54 0.00 0.25 0.00 0.47 0.01 0.37 0.01 0.19 0.00 NEaar 1149u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.61 0.01 0.29 0.00 0.80 0.01 0.42 0.00 0.26 0.00 2 24 0.55 0.01 0.24 0.01 0.44 0.00 0.35 0.00 0.18 0.01 NEaar 1150u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.60 0.00 0.30 0.00 0.65 0.03 0.45 0.02 0.24 0.00 2 24 0.51 0.01 0.24 0.00 0.46 0.04 0.35 0.00 0.18 0.03 NEaar 1151u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.57 0.00 0.27 0.00 0.69 0.03 0.45 0.03 0.26 0.02 2 24 0.38 0.00 0.17 0.00 0.15 0.00 0.31 0.00 0.13 0.00 NEaar 1152u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.62 0.00 0.31 0.00 0.90 0.01 0.42 0.01 0.20 0.01 2 24 0.42 0.00 0.18 0.00 0.24 0.01 0.28 0.01 0.10 0.00 NEaar 1153u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.64 0.01 0.32 0.00 0.79 0.01 0.44 0.02 0.22 0.00 2 24 0.55 0.00 0.26 0.00 0.30 0.01 0.37 0.01 0.17 0.00 NEaar 1201u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.64 0.00 0.32 0.00 0.90 0.01 0.41 0.01 0.19 0.00 2 24 0.54 0.01 0.25 0.00 0.32 0.00 0.32 0.00 0.13 0.01 NEaar 1202u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.60 0.00 0.26 0.00 0.87 0.01 0.37 0.01 0.17 0.00 2 24 0.44 0.00 0.20 0.00 0.35 0.00 0.27 0.01 0.10 0.00 NEaar 1203u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.62 0.00 0.33 0.00 0.85 0.03 0.44 0.00 0.19 0.00 2 24 0.53 0.00 0.26 0.01 0.37 0.01 0.34 0.03 0.15 0.00 NEaar 1204u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.64 0.00 0.31 0.01 0.90 0.02 0.44 0.01 0.21 0.01 2 24 0.54 0.01 0.25 0.00 0.33 0.01 0.29 0.00 0.16 0.00 NEaar 1205u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.63 0.00 0.32 0.00 0.65 0.01 0.42 0.00 0.18 0.01 2 24 0.23 0.00 0.15 0.00 0.07 0.00 0.12 0.00 0.04 0.00 NEaar 1238u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.60 0.00 0.29 0.00 0.78 0.01 0.44 0.00 0.21 0.02 2 24 0.27 0.00 0.16 0.00 0.11 0.00 0.16 0.00 0.06 0.00 NEaar 1239u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.64 0.00 0.32 0.00 0.81 0.00 0.42 0.00 0.21 0.00 2 24 0.55 0.00 0.26 0.00 0.40 0.00 0.32 0.00 0.13 0.01 NEaar 1240u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.64 0.00 0.32 0.00 0.90 0.01 0.44 0.00 0.19 0.00 2 24 0.42 0.00 0.24 0.00 0.21 0.00 0.26 0.00 0.10 0.01 NEaar 1241u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.59 0.00 0.29 0.00 0.84 0.00 0.43 0.00 0.17 0.00 2 24 0.47 0.00 0.22 0.00 0.29 0.01 0.31 0.00 0.13 0.00 NEaar 1242u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.62 0.01 0.28 0.00 0.81 0.03 0.43 0.00 0.22 0.00 2 24 0.46 0.00 0.22 0.00 0.24 0.01 0.28 0.01 0.10 0.01 NEaar 1243u England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.61 0.00 0.26 0.00 0.90 0.00 0.40 0.00 0.17 0.00 2 24 0.45 0.00 0.21 0.00 0.29 0.00 0.28 0.00 0.11 0.00 NEaar 0859u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.65 0.00 0.35 0.00 0.46 0.00 0.43 0.00 0.17 0.00 2 24 0.52 0.00 0.31 0.00 0.22 0.00 0.36 0.00 0.14 0.00 NEaar 0888u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.63 0.00 0.40 0.00 0.15 0.00 0.45 0.00 0.19 0.00 2 24 0.54 0.00 0.28 0.00 0.34 0.00 0.35 0.00 0.12 0.00 NEaar 0889u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.70 0.00 0.44 0.00 0.60 0.03 0.54 0.00 0.22 0.00 2 24 0.60 0.00 0.37 0.00 0.29 0.00 0.43 0.00 0.17 0.00 NEaar 0890u England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.68 0.00 0.37 0.00 0.75 0.01 0.47 0.01 0.19 0.00 2 24 0.55 0.00 0.33 0.00 0.24 0.00 0.35 0.00 0.14 0.00 NEaar 0124u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.65 0.00 0.41 0.02 0.46 0.01 0.60 0.00 0.31 0.01 NEaar 0125u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.72 0.00 0.48 0.00 0.82 0.01 0.59 0.00 0.30 0.00 2 6 0.55 0.01 0.44 0.00 0.00 0.00 0.56 0.01 0.27 0.00 NEaar 0334u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.78 0.00 0.56 0.00 0.30 0.42 0.59 0.00 0.31 0.00 NEaar 0335u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.75 0.00 0.51 0.00 0.00 0.00 0.60 0.00 0.28 0.01 NEaar 2100u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.69 0.00 0.42 0.04 0.29 0.00 0.46 0.07 0.37 0.00 2 24 0.69 0.01 0.46 0.00 0.23 ND 0.52 0.03 0.29 0.03 NEaar 2101u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.72 0.00 0.45 0.02 0.68 0.02 0.59 0.01 0.33 0.02 2 24 0.59 0.00 0.42 0.01 0.18 ND 0.51 0.01 0.25 0.01 NEaar 2103u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.73 0.00 0.46 0.03 0.57 0.01 0.58 0.01 0.32 0.01 2 24 0.68 0.00 0.44 0.01 0.26 0.02 0.54 0.00 0.27 0.03 NEaar 2106u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.67 0.00 0.43 0.00 0.58 0.03 0.63 0.00 0.35 0.05 2 24 0.55 0.01 0.32 0.00 0.42 0.03 0.51 0.00 0.24 0.02 NEaar 2107u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.73 0.00 0.50 0.01 0.59 0.00 0.61 0.02 0.39 0.02 2 24 0.65 0.00 0.44 0.00 0.31 0.01 0.51 0.01 0.29 0.01 NEaar 2109u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.63 0.00 0.38 0.00 0.64 0.10 0.59 0.01 0.36 0.00 2 24 0.56 0.00 0.34 0.01 0.32 ND 0.51 0.04 0.25 0.02 NEaar 2110u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.77 0.01 0.54 0.00 0.57 0.08 0.59 0.00 0.36 0.02 2 24 0.66 0.01 0.43 0.01 0.28 0.01 0.51 0.01 0.30 0.02 NEaar 2113u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.67 0.00 0.45 0.00 0.74 0.01 0.62 0.01 0.34 0.01 2 24 0.61 0.00 0.42 0.01 0.32 ND 0.51 0.02 0.27 0.02 NEaar 2114u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.73 0.01 0.49 0.00 0.52 0.01 0.63 0.00 0.39 0.00 2 24 0.63 0.00 0.43 0.01 0.00 0.00 0.52 0.04 0.29 0.02 NEaar 2121u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.75 0.01 0.53 0.00 0.42 0.00 0.64 0.02 0.42 0.02 2 24 0.67 0.00 0.48 0.01 0.00 0.00 0.51 0.02 0.29 0.03 NEaar 0268u England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Bithynia tentaculata 2 0.67 0.01 0.41 0.01 0.53 0.01 0.57 0.01 0.25 0.01 2 6 0.50 0.00 0.26 0.00 0.21 0.00 0.38 0.00 0.19 0.07 NEaar 0269u England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Bithynia tentaculata 2 0.74 0.00 0.40 0.00 0.00 0.00 0.52 0.00 0.21 0.00 2 6 0.51 0.10 0.31 0.00 0.21 0.18 0.43 0.00 0.16 0.01 NEaar 0506u England Barnham BEF92, Area III, 105, Spit 18 TL 875787 52°22′27.28″N 000°45′10.85″E shell Bithynia tentaculata 2 0.65 0.00 0.35 0.00 0.87 0.02 0.61 0.01 0.26 0.00 2 24 0.58 0.00 0.35 0.00 0.66 0.02 0.57 0.00 0.26 0.00 NEaar 0303u Germany Rhine (Germany) near Cologne modern shell Corbicula fluminae 2 0.02 0.00 0.02 0.03 0.09 0.00 0.17 0.03 0.50 0.01 2 6 0.05 0.00 0.03 0.00 0.03 0.00 0.06 0.00 0.01 0.00 NEaar 0304u Germany Rhine (Germany) near Cologne modern shell Corbicula fluminae 2 0.03 0.00 1.15 0.01 0.09 0.00 0.00 0.00 0.00 0.00 2 6 0.05 0.00 0.03 0.00 0.02 0.00 0.06 0.00 0.02 0.00 NEaar 0093u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.74 0.00 0.53 0.00 0.50 0.00 0.73 0.00 0.36 0.00 2 6 0.49 0.01 0.34 0.00 0.00 0.00 0.59 0.01 0.27 0.00 NEaar 0094u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.77 0.01 0.51 0.00 0.70 0.04 0.72 0.00 0.33 0.00 2 6 0.50 0.01 0.33 0.00 0.00 0.00 0.57 0.01 0.25 0.00 NEaar 0095u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.71 0.00 0.46 0.00 0.00 0.00 0.72 0.00 0.32 0.00 2 6 0.49 0.01 0.34 0.00 0.00 0.00 0.59 0.01 0.26 0.00 NEaar 0096u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.79 0.00 0.52 0.00 0.76 0.01 0.73 0.00 0.33 0.00 2 6 0.53 0.00 0.33 0.00 0.47 0.00 0.60 0.01 0.24 0.00 NEaar 0301u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.80 0.00 0.56 0.01 0.75 0.01 0.72 0.00 0.35 0.00 2 6 0.51 0.01 0.33 0.00 0.32 0.00 0.56 0.00 0.24 0.00 NEaar 0302u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.77 0.00 0.52 0.01 0.00 0.00 0.71 0.00 0.33 0.01 2 6 0.46 0.01 0.29 0.00 0.31 0.00 0.54 0.01 0.22 0.00 NEaar 0318u England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.74 0.00 0.47 0.01 #DIV/0! #DIV/0! 0.72 0.00 0.30 0.00 2 6 0.46 0.00 0.30 0.00 0.00 0.00 0.55 0.00 0.00 0.00 NEaar 0097u England Stanton Harcourt 1981 original channel (oven dried?) SO 414051 51°44′29.49″N 002°51′00.37″W shell Corbicula fluminalis 2 0.52 0.02 0.31 0.01 0.55 0.03 0.69 0.00 0.26 0.01 2 6 0.41 0.00 0.18 0.00 0.37 0.02 0.38 0.00 0.13 0.00 NEaar 0098u England Stanton Harcourt 1981 original channel (oven dried?) SO 414051 51°44′29.49″N 002°51′00.37″W shell Corbicula fluminalis 2 0.57 0.02 0.39 0.01 0.61 0.03 0.71 0.00 0.30 0.01 2 6 0.42 0.00 0.20 0.00 0.37 0.00 0.40 0.00 0.17 0.00 NEaar 0099u England Hackney sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Corbicula fluminalis 2 0.66 0.01 0.39 0.01 0.58 0.05 0.76 0.00 0.28 0.01 2 6 0.38 0.00 0.16 0.00 0.21 0.00 0.45 0.00 0.09 0.00 NEaar 0100u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Corbicula fluminalis 2 0.71 0.01 0.50 0.01 0.00 0.00 0.77 0.01 0.38 0.01 2 6 0.41 0.01 0.28 0.00 0.41 0.01 0.59 0.00 0.19 0.00 NEaar 0333u England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Corbicula fluminalis 2 0.74 0.03 0.28 0.40 0.00 0.00 0.77 0.05 0.06 0.08 NEaar 0093b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.748 0.001 0.486 0.006 0.645 0.010 0.675 0.019 0.292 0.010 2 24 0.545 0.002 0.384 0.000 0.265 0.010 0.550 0.001 0.223 0.004 NEaar 0094b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.786 0.001 0.505 0.009 0.766 0.009 0.668 0.010 0.273 0.006 2 24 0.621 0.008 0.383 0.000 0.221 0.023 0.554 0.010 0.239 0.003 NEaar 0095b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.740 0.029 0.455 0.004 0.700 0.004 0.659 0.005 0.242 0.008 2 24 0.506 0.012 0.354 0.000 0.346 0.014 0.545 0.010 0.191 0.006 NEaar 0096b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.735 0.010 0.488 0.002 0.373 0.002 0.630 0.023 0.325 0.013 2 24 0.278 0.000 0.152 0.001 0.046 0.001 0.315 0.001 0.100 0.001 NEaar 0301b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.748 0.002 0.504 0.006 0.753 0.006 0.713 0.005 0.345 0.001 2 24 0.272 0.009 0.128 0.001 0.037 0.000 0.343 0.007 0.104 0.001 NEaar 0302b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.760 0.000 0.494 0.002 0.666 0.002 0.690 0.008 0.340 0.005 2 24 0.555 0.001 0.353 0.002 0.412 0.013 0.537 0.016 0.239 0.001 NEaar 0318b England Aveley Purfleet Road, Section 6 TQ 552808 51°30′17.38″N 000°14′05.30″E shell Corbicula fluminalis 2 0.688 0.001 0.445 0.012 0.000 0.012 0.680 0.005 0.281 0.001 2 24 0.515 0.004 0.319 0.004 0.229 0.001 0.533 0.021 0.192 0.003 NEaar 0097b England Stanton Harcourt 1981 original channel (oven dried?) SO 414051 51°44′29.49″N 002°51′00.37″W shell Corbicula fluminalis 2 0.593 0.001 0.331 0.003 0.343 0.003 0.597 0.017 0.307 0.009 2 24 0.393 0.006 0.232 0.000 0.316 0.000 0.455 0.006 0.210 0.015 NEaar 0098b England Stanton Harcourt 1981 original channel (oven dried?) SO 414051 51°44′29.49″N 002°51′00.37″W shell Corbicula fluminalis 2 0.654 0.004 0.388 0.009 0.546 0.009 0.637 0.025 0.279 0.005 2 24 0.437 0.003 0.257 0.002 0.333 0.004 0.492 0.010 0.190 0.009 NEaar 0099b England Hackney sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Corbicula fluminalis 2 0.667 0.003 0.397 0.004 0.252 0.004 0.665 0.005 0.314 0.012 2 24 0.429 0.000 0.225 0.001 0.111 0.002 0.462 0.011 0.178 0.000 NEaar 0100b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Corbicula fluminalis 2 0.705 0.004 0.499 0.005 0.709 0.005 0.796 0.002 0.351 0.020 2 6 0.448 0.004 0.302 0.000 0.348 0.000 0.615 0.012 0.245 0.023 NEaar 0333b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Corbicula fluminalis 2 0.744 0.013 0.525 0.001 0.000 0.001 0.795 0.016 0.370 0.007 2 24 0.408 0.016 0.237 0.004 0.000 0.000 0.493 0.014 0.000 0.000 NEaar 0303ib Germany Rhine (Germany) near Cologne modern shell Corbicula fluminae 2 24 0.112 0.002 0.051 0.001 0.155 0.000 0.064 0.001 0.128 0.031 NEaar 0304ib Germany Rhine (Germany) near Cologne modern shell Corbicula fluminae 2 0.000 0.000 0.000 0.000 0.000 2 24 0.117 0.001 0.055 0.001 0.175 0.000 0.038 0.000 0.113 0.018 NEaar 0304iib Germany Rhine (Germany) near Cologne modern shell Corbicula fluminae 2 0.000 0.000 0.000 0.000 0.000 2 24 0.121 0.001 0.060 0.000 0.194 0.001 0.069 0.002 0.139 0.034 NEaar 0991b England Whitecliff Bay, Isle of Wight Bembridge Marls SZ 648864 50°40′25.20″N 001°05′03.56″W shell Corbicula obovata 2 0.610 0.006 0.955 0.000 0.000 0.000 0.892 0.005 0.842 0.074 2 24 0.506 0.005 0.941 0.000 0.000 0.000 0.859 0.008 0.790 0.008 NEaar 0992b England Whitecliff Bay, Isle of Wight Bembridge Marls SZ 648864 50°40′25.20″N 001°05′03.56″W shell Corbicula obovata 2 0.542 0.003 0.918 0.002 0.000 0.002 0.883 0.001 0.900 0.003 2 24 0.635 0.002 0.968 0.000 0.000 0.000 0.869 0.005 0.790 0.007 NEaar 0993b England Whitecliff Bay, Isle of Wight Bembridge Marls SZ 648864 50°40′25.20″N 001°05′03.56″W shell Corbicula obovata 2 0.000 0.000 0.893 0.005 0.000 0.005 0.862 0.007 0.708 0.087 2 24 0.358 0.008 0.890 0.002 0.000 0.000 0.828 0.001 0.661 0.012 NEaar 0994b England Whitecliff Bay, Isle of Wight Bembridge Marls SZ 648864 50°40′25.20″N 001°05′03.56″W shell Corbicula obovata 2 0.000 0.000 0.872 0.007 0.000 0.007 0.832 0.043 0.779 0.043 2 24 0.404 0.053 0.907 0.002 0.000 0.000 0.831 0.006 0.654 0.009 NEaar 4282b England Lion Pit Tramway Cutting Section 5, Sample 2 TQ 598783 51°28′51.91″N 000°17′59.63″E shell Corbicula fluminalis 2 0.768 0.004 0.467 0.004 0.809 0.038 0.487 0.029 0.255 0.011 2 24 0.664 0.006 0.345 0.000 0.583 0.025 0.430 0.003 0.180 0.003 NEaar 4283b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°28′51.91″N 000°17′59.63″E shell Corbicula fluminalis 2 0.730 0.014 0.586 0.018 1.064 0.049 0.801 0.008 0.397 0.007 2 24 0.471 0.002 0.347 0.001 0.309 0.001 0.597 0.001 0.220 0.001 NEaar 4284b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°28′51.91″N 000°17′59.63″E shell Corbicula fluminalis 2 0.732 0.005 0.596 0.001 0.781 0.040 0.808 0.001 0.389 0.006 2 24 0.506 0.000 0.368 0.001 0.261 0.007 0.627 0.007 0.261 0.003 NEaar 4285b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°28′51.91″N 000°17′59.63″E shell Corbicula fluminalis 2 0.709 0.001 0.594 0.003 0.746 0.062 0.799 0.000 0.410 0.011 2 24 0.473 0.001 0.360 0.000 0.279 0.001 0.618 0.012 0.247 0.007 NEaar 0279b England Stratford-upon-Avon 23.5.78 (modern) shell Valvata piscinalis 2 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2 6 0.146 0.001 0.049 0.000 0.161 0.001 0.059 0.003 0.000 0.000 NEaar 0280b England Stratford-upon-Avon 23.5.78 (modern) shell Valvata piscinalis 2 0.243 0.002 0.024 0.033 0.259 0.005 0.080 0.023 0.000 0.000 2 6 0.240 0.002 0.053 0.000 0.250 0.000 0.071 0.009 0.000 0.000 NEaar 0281b England Stratford-upon-Avon 23.5.78 (modern) shell Valvata piscinalis 2 0.111 0.002 0.075 0.106 0.107 0.003 0.041 0.058 0.000 0.000 1 6 0.152 0.039 0.126 0.072 0.000 NEaar 0525b England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.329 0.004 0.037 0.052 0.501 0.001 0.142 0.003 0.080 0.003 2 24 0.404 0.001 0.097 0.001 0.456 0.002 0.128 0.003 0.051 0.001 NEaar 0526b England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.320 0.004 0.071 0.000 0.492 0.012 0.143 0.004 0.086 0.003 2 24 0.398 0.001 0.097 0.000 0.475 0.008 0.130 0.001 0.050 0.003 NEaar 0527b England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.316 0.008 0.000 0.000 0.480 0.001 0.117 0.003 0.000 0.000 2 24 0.337 0.003 0.090 0.003 0.421 0.002 0.123 0.004 0.000 0.000 NEaar 0528b England Stanwick, Northamptonshire ST37, July 2001 shell Valvata piscinalis 2 0.305 0.004 0.036 0.051 0.402 0.006 0.122 0.004 0.088 0.002 2 24 0.336 0.007 0.097 0.002 0.487 0.003 0.140 0.001 0.043 0.004 NEaar 0075b England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Valvata piscinalis 2 0.441 0.007 0.149 0.000 0.868 0.008 0.244 0.002 0.000 0.000 2 6 0.375 0.020 0.114 0.002 0.647 0.006 0.198 0.004 0.000 0.000 NEaar 0475-7b England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.477 0.006 0.194 0.003 0.772 0.013 0.233 0.003 0.000 0.000 2 24 0.450 0.034 0.145 0.001 0.563 0.009 0.193 0.001 0.000 0.000 NEaar 0478-9b England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 0.508 0.013 0.215 0.003 0.787 0.001 0.281 0.005 0.104 0.013 2 24 0.516 0.028 0.214 0.001 0.583 0.030 0.256 0.007 0.113 0.001 NEaar 0479b England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Valvata piscinalis 2 24 0.530 0.007 0.214 0.002 0.608 0.007 0.259 0.012 0.115 0.002 NEaar 0299b England Aveley Area 6, Purfleet Rd TQ 552808 51°30′17.38″N 000°14′05.30″E shell Valvata piscinalis 2 0.550 0.000 0.264 0.000 0.294 0.000 0.425 0.000 0.137 0.000 2 6 0.501 0.030 0.212 0.016 0.000 0.000 0.316 0.038 0.000 0.000 NEaar 4290b England Aveley Area 6, Purfleet Rd TQ 552808 51°30′17.38″N 000°14′05.30″E shell Valvata piscinalis 2 0.637 0.012 0.287 0.027 0.888 0.320 0.408 0.001 0.170 0.010 2 24 0.637 0.012 0.287 0.027 0.888 0.320 0.408 0.001 0.170 0.010 NEaar 0986b England Latton lower levels, 20/08/1999 SY 081965 50°45′38.84″N 003°18′15.64″W shell Valvata piscinalis 2 0.597 0.001 0.289 0.002 0.770 0.010 0.343 0.011 0.124 0.001 2 24 0.543 0.068 0.204 0.000 0.314 0.002 0.324 0.007 0.114 0.018 NEaar 0987b England Latton lower levels, 20/08/1999 SY 081965 50°45′38.84″N 003°18′15.64″W shell Valvata piscinalis 2 0.586 0.000 0.280 0.002 0.814 0.007 0.342 0.004 0.123 0.008 2 24 0.581 0.080 0.223 0.000 0.455 0.005 0.329 0.006 0.110 0.002 NEaar 0988b England Latton lower levels, 13/10/1999 SY 081965 50°45′38.84″N 003°18′15.64″W shell Valvata piscinalis 2 0.593 0.000 0.262 0.002 0.811 0.011 0.357 0.010 0.114 0.003 2 24 0.628 0.001 0.205 0.001 0.465 0.003 0.349 0.040 0.100 0.005 NEaar 0989b England Latton lower levels, 13/10/1999 SY 081965 50°45′38.84″N 003°18′15.64″W shell Valvata piscinalis 2 0.569 0.000 0.271 0.001 0.803 0.003 0.359 0.010 0.119 0.004 2 24 0.588 0.002 0.200 0.000 0.373 0.000 0.337 0.009 0.115 0.017 NEaar 0990b England Latton lower levels, 13/10/1999 SY 081965 50°45′38.84″N 003°18′15.64″W shell Valvata piscinalis 2 0.568 0.001 0.256 0.000 0.724 0.005 0.353 0.014 0.110 0.001 2 24 0.631 0.001 0.215 0.000 0.558 0.001 0.333 0.000 0.186 0.012 NEaar 0072b England Stanton Harcourt interglacial channel sediments SO 414051 51°44′29.49″N 002°51′00.37″W shell Valvata piscinalis 2 0.621 0.011 0.271 0.002 0.926 0.015 0.443 0.002 0.188 0.004 2 6 0.492 0.034 0.197 0.000 0.606 0.007 0.349 0.006 0.000 0.000 NEaar 1206b England Stanton Harcourt interglacial channel sediments SO 414051 51°44′29.49″N 002°51′00.37″W shell Valvata piscinalis 2 0.612 0.014 0.289 0.006 0.793 0.050 0.392 0.022 0.148 0.017 2 24 0.454 0.005 0.232 0.002 0.474 0.095 0.383 0.008 0.108 0.005 NEaar 1207b England Stanton Harcourt interglacial channel sediments SO 414051 51°44′29.49″N 002°51′00.37″W shell Valvata piscinalis 2 0.616 0.017 0.320 0.004 0.812 0.010 0.390 0.014 0.145 0.013 2 24 0.486 0.023 0.250 0.012 0.634 0.020 0.401 0.032 0.148 0.040 NEaar 1208b England Stanton Harcourt interglacial channel sediments SO 414051 51°44′29.49″N 002°51′00.37″W shell Valvata piscinalis 2 0.631 0.019 0.312 0.020 0.749 0.058 0.392 0.012 0.162 0.020 2 24 0.482 0.003 0.230 0.005 0.326 0.018 0.361 0.006 0.115 0.004 NEaar 0855b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.675 0.004 0.340 0.002 0.693 0.011 0.438 0.003 0.181 0.001 2 24 0.656 0.004 0.291 0.005 0.416 0.007 0.385 0.002 0.175 0.003 NEaar 0856b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.658 0.001 0.328 0.004 0.647 0.019 0.434 0.002 0.171 0.005 2 24 0.578 0.068 0.277 0.003 0.320 0.018 0.388 0.010 0.192 0.015 NEaar 0857b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.674 0.001 0.322 0.001 0.736 0.004 0.436 0.002 0.173 0.001 2 24 0.565 0.014 0.299 0.003 0.390 0.008 0.375 0.003 0.156 0.001 NEaar 0858b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Valvata piscinalis 2 0.697 0.001 0.336 0.000 0.789 0.005 0.415 0.001 0.158 0.006 2 24 0.582 0.008 0.309 0.001 0.465 0.008 0.369 0.011 0.153 0.003 NEaar 1172b England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Valvata piscinalis 2 0.642 0.001 0.292 0.012 0.494 0.168 0.484 0.001 0.137 0.001 2 24 0.510 0.004 0.266 0.006 0.453 0.091 0.465 0.008 0.131 0.002 NEaar 1173b England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Valvata piscinalis 2 0.658 0.000 0.305 0.001 0.606 0.004 0.469 0.002 0.145 0.001 2 24 0.566 0.011 0.278 0.006 0.473 0.108 0.451 0.010 0.132 0.001 NEaar 1174b England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Valvata piscinalis 2 0.660 0.001 0.305 0.002 0.534 0.103 0.463 0.005 0.146 0.001 2 24 0.521 0.001 0.284 0.002 0.691 0.039 0.457 0.011 0.129 0.006 NEaar 1468b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Valvata piscinalis 2 0.685 0.005 0.373 0.007 0.468 0.013 0.570 0.006 0.302 0.045 2 6 0.609 0.035 0.314 0.006 0.262 0.015 0.435 0.013 0.156 0.012 NEaar 1469b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Valvata piscinalis 2 0.632 0.019 0.395 0.003 0.549 0.007 0.568 0.005 0.309 0.046 2 6 0.548 0.026 0.267 0.001 0.195 0.008 0.375 0.030 0.144 0.002 NEaar 1470b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Valvata piscinalis 2 0.713 0.003 0.392 0.003 0.822 0.012 0.574 0.004 0.259 0.006 2 24 0.575 0.011 0.291 0.009 0.282 0.080 0.529 0.019 0.224 0.014 NEaar 1471b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Valvata piscinalis 2 0.670 0.011 0.404 0.010 0.843 0.059 0.603 0.013 0.313 0.033 2 24 0.625 0.058 0.373 0.005 0.506 0.020 0.535 0.006 0.239 0.005 NEaar 0490b England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.721 0.003 0.388 0.011 0.788 0.008 0.492 0.012 0.238 0.017 2 24 0.560 0.033 0.359 0.014 0.718 0.078 0.544 0.020 0.222 0.013 NEaar 0491b England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.703 0.006 0.390 0.007 0.735 0.042 0.498 0.011 0.254 0.010 2 24 0.596 0.007 0.338 0.004 0.492 0.033 0.548 0.012 0.247 0.017 NEaar 0492b England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.688 0.004 0.368 0.007 0.466 0.031 0.510 0.007 0.247 0.026 3 24 0.629 0.009 0.299 0.002 0.216 0.188 0.439 0.002 0.176 0.003 NEaar 0493b England Hoxne 2000, sample II, Back Pit Spit 3 (20-30) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.714 0.001 0.389 ND 0.866 0.003 0.474 0.001 0.288 0.014 2 24 0.603 0.008 0.329 0.002 0.350 0.008 0.456 0.041 0.211 0.023 NEaar 0494b England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.719 0.007 0.424 0.007 0.836 0.011 0.534 0.007 0.248 0.015 2 24 0.568 0.006 0.316 0.001 0.309 0.024 0.477 0.016 0.220 0.042 NEaar 0495b England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.726 0.006 0.417 0.004 0.699 0.014 0.524 0.027 0.270 0.031 2 24 0.601 0.001 0.357 0.005 0.443 0.027 0.505 0.011 0.265 0.017 NEaar 0496b England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.726 0.001 0.438 0.009 0.694 0.045 0.549 0.008 0.286 0.013 2 24 0.662 0.041 0.375 0.000 0.451 0.009 0.521 0.012 0.239 0.026 NEaar 0497b England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5 TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.720 0.009 0.424 0.006 0.804 0.048 0.527 0.022 0.318 0.022 2 24 0.643 0.003 0.378 0.000 0.467 0.008 0.468 0.007 0.262 0.015 NEaar 0594b England Hoxne 2000 Back Pit (12) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis 2 0.705 0.000 0.404 0.001 0.422 0.004 0.512 0.001 0.203 0.001 2 24 0.646 0.015 0.396 0.002 0.467 0.059 0.503 0.011 0.252 0.019 NEaar 0595b England Hoxne 01 (50) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis (tall) 2 0.738 0.002 0.492 0.002 0.655 0.060 0.576 0.003 0.271 0.001 2 24 0.621 0.004 0.395 0.001 0.572 0.013 0.506 0.010 0.342 0.048 NEaar 0596b England Hoxne 01 (50) TM 175767 52°20′42.78″N 001°11′30.26″E shell Valvata piscinalis (flat) 2 0.762 0.001 0.467 0.002 0.679 0.010 0.592 0.001 0.263 0.001 2 24 0.579 0.001 0.343 0.002 0.449 0.003 0.426 0.010 0.223 0.004 NEaar 0898b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.767 0.019 0.453 0.002 0.313 0.047 0.654 0.021 0.321 0.005 2 24 0.588 0.003 0.406 0.002 0.454 0.009 0.452 0.013 0.264 0.001 NEaar 0899b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.778 0.004 0.494 0.000 0.255 0.005 0.580 0.013 0.285 0.013 2 24 0.610 0.000 0.386 0.002 0.397 0.004 0.479 0.016 0.242 0.004 NEaar 0900b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.767 0.004 0.491 0.007 0.366 0.012 0.578 0.012 0.271 0.006 2 24 0.647 0.003 0.404 0.003 0.158 0.009 0.553 0.015 0.297 0.005 NEaar 0901b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Valvata piscinalis 2 0.745 0.003 0.453 0.004 0.384 0.028 0.616 0.020 0.271 0.008 2 24 0.612 0.005 0.383 0.002 0.105 0.001 0.512 0.001 0.273 0.008 NEaar 0295b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Valvata piscinalis 2 0.705 0.000 0.403 0.000 0.272 0.000 0.485 0.000 0.244 0.000 2 24 0.624 0.000 0.386 0.003 0.147 0.008 0.543 0.006 0.282 0.009 NEaar 0296b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Valvata piscinalis 2 0.677 0.000 0.402 0.000 0.454 0.000 0.540 0.000 0.262 0.000 2 24 0.588 0.000 0.350 0.002 0.104 0.010 0.555 0.006 0.281 0.008 NEaar 4153b England Tattershall Castle Ip IIb, sample 76K TQ 598783 51°28′51.91″N 000°17′59.63″E shell Valvata piscinalis 2 0.517 0.003 0.192 0.006 0.951 0.037 0.303 0.003 0.130 0.000 2 24 0.393 0.025 0.141 0.001 0.347 0.008 0.251 0.004 0.101 0.011 NEaar 4255b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Valvata piscinalis 2 0.554 0.002 0.224 0.008 0.986 0.051 0.308 0.025 0.150 0.005 2 24 0.418 0.004 0.165 0.007 0.577 0.172 0.228 0.033 0.103 0.001 NEaar 4256b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Valvata piscinalis 2 0.550 0.002 0.231 0.004 0.964 0.009 0.304 0.013 0.129 0.007 2 24 0.414 0.003 0.173 0.001 0.406 0.006 0.266 0.000 0.091 0.001 NEaar 4257b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Valvata piscinalis 2 0.467 0.038 0.208 0.003 0.228 0.106 0.254 0.018 0.117 0.003 2 24 0.414 0.001 0.165 0.003 0.342 0.000 0.267 0.003 0.091 0.002 NEaar 0290b England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.600 0.009 0.241 0.002 0.823 0.049 0.397 0.010 0.080 0.114 4 6 0.543 0.030 0.203 0.002 0.715 0.023 0.367 0.012 0.147 0.011 NEaar 0291b England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 1 0.616 0.247 0.903 0.447 0.161 4 6 0.617 0.041 0.642 0.009 0.653 0.040 0.523 0.029 0.083 0.096 NEaar 0292b England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 1 0.616 0.244 0.863 0.424 0.169 2 6 0.513 0.042 0.198 0.002 0.491 0.021 0.323 0.004 0.139 0.001 NEaar 1245b England Funthams Lane Unit F1 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.535 0.002 0.263 0.012 0.507 0.002 0.401 0.042 0.191 0.022 2 6 0.496 0.011 0.235 0.003 0.576 0.049 0.355 0.001 0.155 0.025 NEaar 1246b England Funthams Lane Unit F1 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.523 0.019 0.239 0.073 0.387 0.016 0.352 0.048 0.235 0.014 2 6 0.459 0.012 0.186 0.016 0.394 0.016 0.336 0.006 0.185 0.016 NEaar 1179b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.566 0.002 0.225 0.001 0.616 0.019 0.336 0.019 0.105 0.001 2 24 0.454 0.019 0.202 0.005 0.494 0.074 0.398 0.001 0.087 0.004 NEaar 1180b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.522 0.002 0.222 0.002 0.719 0.009 0.358 0.003 0.115 0.006 2 24 0.369 0.006 0.160 0.000 0.303 0.011 0.306 0.023 0.075 0.002 NEaar 1181b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.554 0.002 0.225 0.000 0.518 0.012 0.330 0.019 0.104 0.001 2 24 0.336 0.054 0.144 0.204 0.270 0.044 0.382 0.001 0.035 0.050 NEaar 1182b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.582 0.003 0.237 0.000 0.756 0.007 0.359 0.015 0.129 0.001 2 24 0.409 0.005 0.168 0.000 0.359 0.009 0.376 0.012 0.095 0.005 NEaar 1183b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.572 0.002 0.272 0.001 0.763 0.015 0.334 0.030 0.133 0.006 2 24 0.467 0.005 0.231 0.004 0.601 0.016 0.359 0.009 0.124 0.027 NEaar 1184b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.580 0.000 0.242 0.001 0.723 0.008 0.376 0.025 0.130 0.003 2 24 0.384 0.014 0.187 0.001 0.416 0.042 0.404 0.004 0.096 0.005 NEaar 1185b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.599 0.000 0.234 0.002 0.753 0.016 0.381 0.008 0.119 0.002 2 24 0.469 0.010 0.207 0.006 0.625 0.049 0.410 0.005 0.119 0.012 NEaar 1186b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.583 0.001 0.246 0.000 0.700 0.009 0.358 0.015 0.123 0.003 2 24 0.433 0.034 0.218 0.002 0.589 0.117 0.398 0.005 0.109 0.014 NEaar 1187b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.577 0.001 0.222 0.003 0.599 0.009 0.333 0.020 0.108 0.002 2 24 0.433 0.067 0.270 0.018 0.561 0.014 0.419 0.035 0.099 0.009 NEaar 1188b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.594 0.001 0.238 0.001 0.734 0.016 0.355 0.015 0.122 0.000 2 24 0.467 0.016 0.220 0.001 0.604 0.017 0.373 0.000 0.135 0.008 NEaar 1189b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.585 0.007 0.243 0.002 0.790 0.010 0.348 0.015 0.124 0.002 3 24 0.465 0.026 0.230 0.022 0.694 0.073 0.408 0.006 0.144 0.028 NEaar 1190b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.575 0.004 0.228 0.002 0.501 0.002 0.331 0.021 0.096 0.003 3 24 0.431 0.032 0.245 0.029 0.662 0.028 0.427 0.003 0.127 0.017 NEaar 1191b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.574 0.003 0.220 0.003 0.630 0.084 0.395 0.016 0.127 0.003 2 24 0.428 0.004 0.203 0.017 0.595 0.091 0.421 0.024 0.142 0.016 NEaar 1192b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.570 0.002 0.236 0.003 0.691 0.093 0.354 0.012 0.119 0.004 2 24 0.424 0.002 0.197 0.004 0.442 0.015 0.405 0.013 0.122 0.007 NEaar 1193b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.584 0.004 0.235 0.002 0.761 0.011 0.375 0.024 0.125 0.002 2 24 0.428 0.005 0.215 0.002 0.548 0.008 0.414 0.012 0.125 0.013 NEaar 1194b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.599 0.001 0.255 0.000 0.741 0.011 0.353 0.014 0.122 0.004 2 24 0.414 0.064 0.289 0.087 0.506 0.065 0.385 0.017 0.115 0.012 NEaar 1195b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.607 0.003 0.253 0.002 0.790 0.005 0.366 0.011 0.135 0.003 2 24 0.424 0.022 0.198 0.001 0.534 0.022 0.349 0.016 0.142 0.003 NEaar 1196b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.593 0.007 0.247 0.000 0.861 0.010 0.425 0.007 0.134 0.006 2 24 0.407 0.014 0.189 0.000 0.521 0.018 0.373 0.007 0.153 0.009 NEaar 1197b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.585 0.005 0.235 0.002 0.812 0.010 0.446 0.005 0.117 0.005 2 24 0.411 0.001 0.182 0.000 0.420 0.002 0.380 0.003 0.147 0.028 NEaar 1198b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.601 0.003 0.254 0.000 0.865 0.007 0.372 0.010 0.134 0.008 2 24 0.429 0.019 0.208 0.001 0.676 0.001 0.385 0.006 0.137 0.002 NEaar 1199b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.609 0.002 0.245 0.001 0.827 0.008 0.421 0.009 0.134 0.006 2 24 0.335 0.019 0.197 0.006 0.384 0.004 0.483 0.003 0.127 0.002 NEaar 1200b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.628 0.011 0.269 0.021 0.742 0.046 0.396 0.005 0.135 0.006 2 24 0.426 0.018 0.223 0.012 0.547 0.027 0.384 0.013 0.140 0.012 NEaar 1235b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.595 0.033 0.262 0.010 0.642 0.032 0.409 0.008 0.154 0.007 2 24 0.473 0.000 0.211 0.004 0.514 0.038 0.366 0.011 0.153 0.009 NEaar 1236b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.606 0.028 0.271 0.017 0.647 0.009 0.408 0.008 0.163 0.031 2 24 0.472 0.024 0.251 0.031 0.547 0.018 0.379 0.027 0.151 0.033 NEaar 1237b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Valvata piscinalis 2 0.604 0.011 0.271 0.003 0.725 0.059 0.416 0.001 0.145 0.010 2 24 0.473 0.040 0.228 0.047 0.649 0.061 0.400 0.007 0.149 0.031 NEaar 4280b England Lion Pit Tramway Cutting Section 5, Sample 2 TQ 598783 51°28′51.91″N 000°17′59.63″E shell Valvata piscinalis 2 0.632 0.003 0.317 0.001 1.061 0.105 0.397 0.002 0.164 0.008 2 24 0.539 0.002 0.269 0.007 0.448 0.021 0.371 0.000 0.148 0.010 NEaar 4281b England Lion Pit Tramway Cutting Section 5, Sample 2 TQ 598783 51°28′51.91″N 000°17′59.63″E shell Valvata piscinalis 2 0.621 0.001 0.326 0.006 0.878 0.116 0.413 0.037 0.205 0.016 2 24 0.464 0.004 0.212 0.001 0.360 0.041 0.333 0.022 0.159 0.011 NEaar 4286b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°26′59.01″N 000°17′38.41″E shell Valvata piscinalis 2 0.755 0.004 0.506 0.016 0.964 0.150 0.564 0.007 0.315 0.033 2 24 0.573 0.003 0.384 0.001 0.264 0.017 0.494 0.010 0.259 0.043 NEaar 4287b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°26′59.01″N 000°17′38.41″E shell Valvata piscinalis 2 0.780 0.013 0.532 0.007 0.991 0.066 0.574 0.002 0.340 0.030 2 24 0.573 0.002 0.398 0.007 0.279 0.051 0.478 0.015 0.291 0.020 NEaar 4288b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°26′59.01″N 000°17′38.41″E shell Valvata piscinalis 2 0.705 0.018 0.471 0.019 0.588 0.456 0.533 0.026 0.284 0.003 2 24 0.569 0.006 0.384 0.001 0.282 0.001 0.470 0.005 0.250 0.008 NEaar 4289b England Swanscombe Dierden's Pit, IV (10) TQ 595748 51°26′59.01″N 000°17′38.41″E shell Valvata piscinalis 2 0.743 0.002 0.511 0.001 0.828 0.019 0.545 0.009 0.287 0.006 2 24 0.604 0.021 0.425 0.002 0.240 0.002 0.449 0.004 0.260 0.015 NEaar 0128b England Stratford-upon-Avon modern shell Bithynia tentaculata 2 0.000 0.000 0.000 0.000 0.172 0.000 0.000 0.000 ND ND 2 6 0.141 0.000 0.075 0.002 0.167 0.004 0.067 0.009 0.000 0.000 NEaar 0129b England Stratford-upon-Avon modern shell Bithynia tentaculata 2 0.000 0.000 0.000 0.000 0.203 0.005 0.000 0.000 0.000 ND 2 6 0.161 0.002 0.051 0.001 0.187 0.001 0.061 0.013 0.000 0.000 NEaar 0272b England Stratford-upon-Avon modern shell Bithynia tentaculata 2 ND ND ND ND 0.207 0.006 ND ND ND ND 2 6 0.143 0.003 0.044 0.000 0.220 0.001 0.050 0.012 0.000 0.000 NEaar 0273b England Stratford-upon-Avon modern shell Bithynia tentaculata 1 ND ND ND ND ND 2 6 0.247 0.002 0.070 0.000 0.309 0.004 0.075 0.011 0.000 0.000 NEaar 0130b England Acle, Norfolk 1995 (modern) shell Bithynia tentaculata 2 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ND 0.000 0.000 2 6 0.051 ND 0.045 0.001 0.034 0.000 0.037 0.015 0.000 0.000 NEaar 0131b England Acle, Norfolk 1995 (modern) shell Bithynia tentaculata 2 0.000 ND 0.000 0.000 0.000 0.000 ND ND 0.000 0.000 2 6 0.025 0.035 0.044 0.001 0.000 0.000 0.048 0.014 0.000 0.000 NEaar 0480b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.358 0.009 0.096 0.002 0.499 0.012 0.115 0.003 ND ND 2 24 0.322 0.025 0.100 0.001 0.416 0.008 0.122 0.002 0.000 0.000 NEaar 0481b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.355 0.002 0.091 0.009 0.469 0.005 0.102 0.003 ND ND 2 24 0.326 0.002 0.096 0.000 0.417 0.008 0.087 0.001 0.000 0.000 NEaar 0482b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.318 0.005 0.084 0.001 0.535 0.007 0.137 0.003 ND ND 2 24 0.274 0.011 0.097 0.000 0.400 0.007 0.099 0.001 0.000 0.000 NEaar 0520b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.347 0.008 0.088 0.001 0.506 0.006 0.131 0.004 0.093 0.003 2 24 0.302 0.001 0.090 0.001 0.413 0.007 0.115 0.006 0.047 0.001 NEaar 0521b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.371 0.010 0.092 0.005 0.527 0.012 0.116 0.004 ND ND 2 24 0.358 0.001 0.103 0.001 0.440 0.006 0.118 0.002 0.053 0.000 NEaar 0522b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.383 0.003 0.199 0.006 0.573 0.019 0.142 0.001 ND ND 2 24 0.280 0.006 0.090 0.001 0.296 0.003 0.102 0.004 0.036 0.002 NEaar 0523b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.349 0.005 0.089 0.002 0.526 0.001 0.109 0.009 ND ND 2 24 0.332 0.003 0.103 0.003 0.433 0.011 0.109 0.002 0.044 0.002 NEaar 0524b England Stanwick, Northamptonshire ST37, July 2001 shell Bithynia tentaculata 2 0.372 0.002 0.096 0.001 0.579 0.011 0.126 0.010 ND ND 2 24 0.329 0.003 0.102 0.000 0.499 0.001 0.118 0.011 0.044 0.000 NEaar 0076b England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.494 0.007 0.191 0.005 0.852 0.013 0.217 0.000 0.098 ND 2 6 0.380 0.017 0.156 0.003 0.602 0.005 0.190 0.002 0.000 0.000 NEaar 0247b England Cassington 4B, top 10cm SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.518 0.002 0.176 0.001 0.744 0.013 0.211 0.001 0.000 0.000 2 6 0.433 0.014 0.161 0.001 0.653 0.002 0.188 0.001 0.088 0.002 NEaar 0248b England Cassington 4B, top 10cm SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.488 0.002 0.181 0.000 0.729 0.010 0.253 0.001 0.000 0.000 3 6 0.376 0.012 0.181 0.003 0.576 0.006 0.221 0.010 0.095 0.005 NEaar 0884b England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.482 0.001 0.175 0.008 0.734 0.004 0.205 0.003 0.086 0.001 2 24 0.401 0.000 0.178 0.000 0.563 0.004 0.207 0.001 0.086 0.002 NEaar 0885b England Cassington 60 SP 48_10_ 51°47′11.79″N 001°18′19.91″W shell Bithynia tentaculata 2 0.478 0.001 0.167 0.006 0.740 0.005 0.209 0.003 0.087 0.001 2 24 0.405 0.004 0.176 0.002 0.576 0.014 0.202 0.002 0.087 0.000 NEaar 0895b England Coston Ip IIb, 15-25 cm TM 062065 51°43′09.49″N 000°59′01.71″E shell Bithynia tentaculata 2 0.573 0.008 0.235 0.003 0.815 0.014 0.306 0.008 0.129 0.002 2 24 0.443 0.001 0.195 0.001 0.434 0.002 0.242 0.004 0.103 0.001 NEaar 0896b England Coston Ip IIb, 15-25 cm TM 062065 51°43′09.49″N 000°59′01.71″E shell Bithynia tentaculata 2 0.590 0.009 0.221 0.003 0.800 0.039 0.274 0.007 0.114 0.003 2 24 0.502 0.006 0.215 0.003 0.552 0.019 0.240 0.004 0.120 0.013 NEaar 0897b England Coston Ip IIb, 15-25 cm TM 062065 51°43′09.49″N 000°59′01.71″E shell Bithynia tentaculata 2 0.575 0.007 0.242 0.002 0.651 0.006 0.290 0.010 0.117 0.004 2 24 0.475 0.002 0.219 0.005 0.477 0.005 0.252 0.008 0.107 0.003 NEaar 0305b England Deeping St. James sample 8 TF 185081 52°39′27.66″N 000°14′58.17″W shell Bithynia tentaculata 2 0.548 0.010 0.203 0.005 0.819 0.070 0.323 0.002 0.157 0.044 2 6 0.421 0.022 0.168 0.002 0.337 0.004 0.263 0.022 0.106 0.012 NEaar 0306b England Deeping St. James sample 8 TF 185081 52°39′27.66″N 000°14′58.17″W shell Bithynia tentaculata 2 0.547 0.002 0.209 0.002 0.646 0.036 0.322 0.006 0.163 0.038 2 6 0.442 0.018 0.183 0.002 0.594 0.001 0.282 0.015 0.142 0.036 NEaar 0531b England Deeping St. James DSJ34, July 2001 TF 182084 52°39′37.60″N 000°15′13.74″W shell Bithynia tentaculata 2 0.600 0.009 0.265 0.005 0.701 0.017 0.335 0.002 0.127 0.014 2 24 0.457 0.018 0.203 0.001 0.314 0.007 0.298 0.005 0.106 0.008 NEaar 0260b England Shropham Ip TM 005938 52°30′18.78″N 000°57′10.00″E shell Bithynia tentaculata 2 0.478 0.001 0.180 0.005 0.311 0.008 0.285 0.002 0.104 ND 2 6 0.442 0.005 0.312 0.000 0.641 0.009 0.319 0.040 0.115 0.007 NEaar 0261b England Shropham Ip TM 005938 52°30′18.78″N 000°57′10.00″E shell Bithynia tentaculata 2 0.540 0.007 0.187 0.006 0.862 0.038 0.264 0.005 0.106 ND 2 6 0.442 0.011 0.169 0.001 0.653 0.001 0.242 0.012 0.104 0.015 NEaar 0956b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Bithynia tentaculata 2 0.601 0.007 0.268 0.002 0.587 0.003 0.298 0.015 0.112 0.003 2 24 0.507 0.002 0.241 0.002 0.454 0.019 0.311 0.003 0.111 0.004 NEaar 0957b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Bithynia tentaculata 2 0.589 0.003 0.237 0.000 0.737 0.012 0.276 0.012 0.113 0.003 2 24 0.511 0.000 0.225 0.002 0.685 0.003 0.263 0.001 0.106 0.001 NEaar 0958b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51°30′31.20″N 000°08′22.89″W shell Bithynia tentaculata 2 0.587 0.002 0.236 0.002 0.740 0.020 0.273 0.008 0.123 0.020 2 24 0.503 0.003 0.223 0.001 0.585 0.066 0.281 0.004 0.111 0.003 NEaar 0287b England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.596 0.008 0.284 0.016 0.853 0.009 0.396 0.011 0.179 0.011 3 6 0.504 0.010 0.236 0.001 0.669 0.001 0.358 0.002 0.045 0.078 NEaar 0288b England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.625 0.000 0.298 0.009 0.880 0.095 0.432 0.000 0.179 0.004 3 6 0.508 0.011 0.249 0.001 0.454 0.015 0.374 0.019 0.141 0.002 NEaar 0289b England Funthams Lane Sample 3 Unit 3 a TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.585 0.003 0.256 0.012 0.784 0.014 0.396 0.001 0.161 0.004 2 6 0.533 0.009 0.413 0.003 0.465 0.027 0.424 0.030 0.000 0.000 NEaar 1244b England Funthams Lane Unit F1 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.594 0.022 0.324 0.001 0.567 0.023 0.465 0.014 0.208 0.025 2 6 0.434 0.025 0.254 0.003 0.423 0.022 0.389 0.007 0.195 0.008 NEaar 1140b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.594 0.008 0.307 0.002 0.722 0.012 0.383 0.015 0.165 0.002 2 24 0.464 0.008 0.263 0.004 0.626 0.016 0.384 0.001 0.164 0.006 NEaar 1141b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.590 0.001 0.317 0.003 0.748 0.010 0.414 0.017 0.169 0.003 2 24 0.483 0.008 0.274 0.035 0.557 0.083 0.418 0.003 0.163 0.029 NEaar 1142b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.578 0.004 0.319 0.006 0.728 0.007 0.395 0.024 0.160 0.001 2 24 0.515 0.015 0.307 0.031 0.689 0.029 0.415 0.006 0.187 0.006 NEaar 1143b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.584 0.004 0.298 0.002 0.708 0.013 0.357 0.016 0.144 0.004 2 24 0.507 0.005 0.266 0.004 0.699 0.042 0.373 0.004 0.154 0.003 NEaar 1144b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.601 0.001 0.323 0.002 0.772 0.024 0.382 0.003 0.163 0.012 2 24 0.507 0.023 0.309 0.044 0.760 0.071 0.379 0.001 0.152 0.009 NEaar 1145b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.609 0.000 0.345 0.003 0.676 0.006 0.388 0.020 0.156 0.004 2 24 0.517 0.001 0.308 0.012 0.638 0.040 0.423 0.004 0.166 0.029 NEaar 1146b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.588 0.004 0.331 0.012 0.694 0.002 0.375 0.018 0.152 0.002 2 24 0.494 0.016 0.308 0.036 0.718 0.170 0.415 0.003 0.166 0.024 NEaar 1147b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 1 0.583 0.319 0.715 0.370 0.157 2 24 0.463 0.001 0.277 0.013 0.399 0.037 0.394 0.005 0.178 0.039 NEaar 1148b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.576 0.002 0.322 0.003 0.710 0.016 0.372 0.005 0.156 0.003 2 24 0.484 0.006 0.282 0.000 0.542 0.042 0.397 0.003 0.180 0.059 NEaar 1149b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.596 0.001 0.335 0.005 0.727 0.012 0.391 0.013 0.158 0.004 2 24 0.487 0.000 0.282 0.005 0.543 0.044 0.446 0.016 0.171 0.026 NEaar 1150b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.579 0.003 0.323 0.008 0.679 0.032 0.376 0.005 0.157 0.005 2 24 0.495 0.030 0.281 0.013 0.582 0.042 0.409 0.002 0.181 0.018 NEaar 1151b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.594 0.011 0.320 0.005 0.733 0.010 0.392 0.007 0.155 0.004 2 24 0.478 0.015 0.274 0.010 0.596 0.016 0.403 0.005 0.155 0.017 NEaar 1152b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.604 0.007 0.333 0.005 0.778 0.008 0.398 0.004 0.165 0.000 2 24 0.559 0.002 0.192 0.006 0.284 0.006 0.243 0.001 0.098 0.003 NEaar 1153b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.584 0.007 0.324 0.001 0.698 0.020 0.368 0.021 0.153 0.004 2 24 0.483 0.011 0.265 0.009 0.524 0.024 0.370 0.002 0.149 0.011 NEaar 1201b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.632 0.019 0.349 0.011 0.692 0.019 0.430 0.007 0.163 0.013 2 24 0.487 0.011 0.282 0.005 0.660 0.022 0.397 0.003 0.122 0.016 NEaar 1202b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.584 0.008 0.298 0.011 0.838 0.185 0.423 0.007 0.153 0.009 2 24 0.454 0.021 0.239 0.000 0.448 0.106 0.352 0.014 0.114 0.004 NEaar 1203b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.619 0.007 0.381 0.011 0.718 0.112 0.408 0.010 0.151 0.003 2 24 0.506 0.004 0.274 0.002 0.581 0.049 0.357 0.002 0.117 0.001 NEaar 1204b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.641 0.003 0.360 0.009 0.794 0.023 0.425 0.006 0.167 0.003 2 24 0.529 0.005 0.297 0.005 0.548 0.041 0.433 0.001 0.141 0.005 NEaar 1205b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.629 0.012 0.350 0.004 0.761 0.018 0.424 0.011 0.159 0.007 2 24 0.480 0.007 0.297 0.006 0.402 0.005 0.388 0.002 0.127 0.010 NEaar 1238b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.620 0.007 0.332 0.006 0.711 0.031 0.437 0.005 0.198 0.001 2 24 0.499 0.021 0.309 0.023 0.544 0.056 0.404 0.008 0.157 0.006 NEaar 1239b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.597 0.003 0.326 0.001 0.726 0.017 0.443 0.010 0.184 0.002 2 24 0.478 0.003 0.289 0.002 0.535 0.011 0.406 0.000 0.161 0.008 NEaar 1240b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.613 0.003 0.360 0.008 0.648 0.042 0.472 0.000 0.209 0.005 2 24 0.502 0.004 0.316 0.005 0.620 0.008 0.421 0.014 0.182 0.012 NEaar 1241b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.606 0.018 0.297 0.001 0.680 0.004 0.427 0.013 0.180 0.019 2 24 0.479 0.003 0.258 0.008 0.554 0.002 0.368 0.005 0.155 0.014 NEaar 1242b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.614 0.012 0.321 0.004 0.678 0.086 0.402 0.015 0.164 0.010 2 24 0.476 0.010 0.282 0.005 0.599 0.077 0.373 0.004 0.142 0.002 NEaar 1243b England Funthams Lane Unit G3 TL 238979 52°33′53.47″N 000°10′29.97″W shell Bithynia tentaculata 2 0.596 0.009 0.295 0.005 0.680 0.078 0.390 0.010 0.148 0.002 2 24 0.481 0.012 0.272 0.028 0.605 0.047 0.350 0.013 0.125 0.008 NEaar 0859b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.683 0.001 0.389 0.000 0.695 0.003 0.486 0.003 0.203 0.002 2 24 0.607 0.001 0.374 0.000 0.438 0.001 0.431 0.007 0.211 0.003 NEaar 0888b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.672 0.000 0.364 0.000 0.773 0.004 0.445 0.001 0.175 0.004 2 24 0.493 0.000 0.277 0.000 0.201 0.012 0.355 0.010 0.148 0.014 NEaar 0889b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.695 0.001 0.422 0.001 0.597 0.001 0.528 0.002 0.213 0.002 2 24 0.519 0.001 0.317 0.001 0.127 0.006 0.412 0.005 0.187 0.002 NEaar 0890b England Cudmore Grove Bed 4, beneath the gravels TM 064143 51°47′21.35″N 000°59′28.78″E shell Bithynia tentaculata 2 0.710 0.002 0.404 0.000 0.698 0.008 0.509 0.001 0.204 0.002 2 24 0.502 0.026 0.285 0.000 0.114 0.000 0.402 0.009 0.181 0.024 NEaar 0268b England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Bithynia tentaculata 1 0.684 0.358 0.716 0.523 0.228 2 6 0.530 0.006 0.343 0.000 0.358 0.016 0.474 0.016 0.159 0.009 NEaar 0269b England Hackney Sample 7 TQ 3452 8587 51°33′20.46″N 000°03′39.71″W shell Bithynia tentaculata 2 6 0.581 0.007 0.336 0.001 0.455 0.000 0.461 0.008 0.174 0.003 NEaar 0124b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.733 0.012 0.492 0.005 ND ND 0.591 0.003 0.274 0.011 2 6 0.631 0.004 0.424 0.003 0.232 0.013 0.509 0.006 0.259 0.001 NEaar 0125b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.722 0.003 0.494 0.001 0.689 0.010 0.609 0.001 0.297 0.008 2 6 0.539 0.001 0.392 0.001 0.187 0.001 0.531 0.003 0.276 0.002 NEaar 0334b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 1 0.703 0.426 0.000 0.597 0.276 2 6 0.665 0.014 0.650 0.005 0.459 0.035 0.620 0.009 0.248 0.019 NEaar 0335b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.734 0.005 0.488 0.002 0.631 0.018 0.607 0.002 0.320 0.001 2 6 0.622 0.001 0.394 0.002 0.366 0.028 0.529 0.010 0.209 0.013 NEaar 2097b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.659 0.020 0.484 0.008 0.609 0.154 0.578 0.010 0.268 0.002 2 24 0.342 0.008 0.264 0.006 0.000 0.000 0.438 0.014 0.252 0.119 NEaar 2098b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.604 0.001 0.461 0.001 0.829 0.028 0.581 0.001 0.251 0.003 2 24 0.386 0.015 0.272 0.009 0.103 0.008 0.422 0.008 0.203 0.035 NEaar 2099b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.651 0.001 0.500 0.002 0.981 0.012 0.616 0.002 0.278 0.010 2 24 0.503 0.004 0.378 0.024 0.258 0.045 0.555 0.015 0.448 0.084 NEaar 2100b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.744 0.001 0.556 0.002 0.926 0.021 0.610 0.000 0.282 0.001 2 24 0.676 0.023 0.467 0.019 0.408 0.209 0.576 0.031 0.261 0.044 NEaar 2101b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.702 0.000 0.529 0.004 0.937 0.005 0.614 0.000 0.280 0.002 2 24 0.615 0.006 0.445 0.005 0.565 0.020 0.579 0.009 0.252 0.010 NEaar 2102b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.695 0.001 0.547 0.002 0.932 0.024 0.640 0.002 0.303 0.001 2 24 0.606 0.010 0.456 0.008 0.558 0.028 0.586 0.009 0.292 0.030 NEaar 2103b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.723 0.001 0.588 0.002 0.937 0.045 0.639 0.001 0.294 0.000 2 24 0.633 0.002 0.478 0.006 0.567 0.087 0.606 0.006 0.258 0.027 NEaar 2104b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.649 0.002 0.507 0.003 0.927 0.027 0.609 0.000 0.277 0.001 2 24 0.522 0.009 0.393 0.009 1.134 1.004 0.547 0.021 0.245 0.009 NEaar 2105b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 1 0.637 ND 0.627 ND ND ND 0.590 0.032 0.761 ND 2 24 0.460 0.115 0.378 0.062 0.000 0.000 0.472 0.026 0.284 0.076 NEaar 2106b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.732 0.025 0.639 0.088 0.770 0.035 0.652 0.001 0.323 0.013 2 24 0.603 0.003 0.483 0.012 0.550 0.018 0.607 0.021 0.254 0.034 NEaar 2107b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.762 0.025 0.627 0.065 0.825 0.056 0.636 0.012 0.356 0.008 2 24 0.645 0.005 0.480 0.009 0.661 0.151 0.579 0.008 0.247 0.041 NEaar 2108b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.718 0.049 0.744 0.218 0.718 0.085 0.600 0.019 0.329 0.029 2 24 0.611 0.004 0.477 0.017 0.551 0.049 0.569 0.019 0.239 0.020 NEaar 2109b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.716 0.022 0.548 0.006 0.895 0.212 0.589 0.032 0.302 0.048 2 24 0.599 0.003 0.427 0.009 0.422 0.005 0.521 0.014 0.253 0.031 NEaar 2110b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.830 0.102 0.559 0.033 0.811 0.062 0.624 0.001 0.321 0.029 2 24 0.573 0.001 0.422 0.001 0.284 0.008 0.539 0.002 0.223 0.001 NEaar 2111b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.742 0.111 0.542 0.062 ND ND 0.585 0.004 0.244 0.344 2 24 0.462 0.029 0.370 0.011 0.000 0.000 0.475 0.001 0.195 0.007 NEaar 2112b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.722 0.008 0.525 0.024 0.835 0.083 0.630 0.003 0.306 0.009 2 24 0.580 0.011 0.438 0.002 0.406 0.050 0.594 0.002 0.249 0.001 NEaar 2113b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.759 0.009 0.577 0.012 1.072 0.100 0.595 0.017 0.280 0.006 2 24 0.650 0.004 0.492 0.004 0.740 0.007 0.568 0.002 0.253 0.002 NEaar 2114b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.745 0.006 0.559 0.005 1.211 0.450 0.616 0.004 0.326 0.002 2 24 0.613 0.008 0.464 0.001 0.558 0.010 0.574 0.001 0.242 0.000 NEaar 2115b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.671 0.027 0.546 0.059 1.069 0.095 0.602 0.017 0.303 0.037 2 24 0.573 0.009 0.436 0.003 0.446 0.013 0.575 0.003 0.240 0.003 NEaar 2116b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.740 0.018 0.591 0.017 0.902 0.230 0.633 0.005 0.304 0.009 2 24 0.501 0.009 0.403 0.002 0.072 0.001 0.472 0.001 0.204 0.004 NEaar 2117b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.720 0.065 0.431 0.003 0.482 ND 0.608 0.022 0.590 0.002 2 24 0.485 0.027 0.345 0.000 0.000 0.000 0.465 0.018 0.192 0.008 NEaar 2118b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.686 0.006 0.507 0.013 0.942 0.137 0.605 0.012 0.352 0.092 2 24 0.569 0.018 0.427 0.004 0.547 0.021 0.585 0.000 0.249 0.004 NEaar 2119b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.726 0.046 0.550 0.012 0.997 0.130 0.636 0.000 0.306 0.006 2 24 0.599 0.008 0.457 0.004 0.781 0.001 0.595 0.001 0.255 0.002 NEaar 2120b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.747 0.012 0.602 0.025 0.940 0.150 0.635 0.005 0.376 0.003 2 24 0.621 0.003 0.503 0.004 0.722 0.022 0.598 0.001 0.269 0.004 NEaar 2121b England Purfleet Greenlands Shell Bed, 6 TQ 568785 51°29′01.40″N 000°15′24.55″E shell Bithynia tentaculata 2 0.753 0.019 0.611 0.008 0.870 0.031 0.638 0.003 0.342 0.036 2 24 0.624 0.003 0.495 0.005 0.491 0.004 0.592 0.001 0.261 0.002 NEaar 0506b England Barnham BEF92, Area III, 105, Spit 18 TL 875787 52°22′27.28″N 000°45′10.85″E shell Bithynia tentaculata 2 0.673 0.003 0.380 0.003 0.902 0.017 0.558 0.013 0.267 0.001 2 24 0.570 0.007 0.344 0.001 0.662 0.025 0.478 0.024 0.237 0.003 NEaar 1460b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Bithynia tentaculata 2 0.649 0.002 0.361 0.006 0.677 0.011 0.558 0.006 0.345 0.007 2 24 0.538 0.010 0.270 0.014 0.456 0.050 0.478 0.012 0.223 0.001 NEaar 1461b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Bithynia tentaculata 2 0.718 0.000 0.511 0.006 0.404 0.003 0.610 0.020 0.322 0.047 2 24 0.639 0.001 0.413 0.004 0.284 0.103 0.582 0.006 0.253 0.010 NEaar 1462b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Bithynia tentaculata 2 0.669 0.008 0.443 0.013 0.580 0.003 0.590 0.001 0.276 0.033 2 24 0.665 0.027 0.358 0.024 0.431 0.023 0.569 0.023 0.220 0.005 NEaar 1463b England Clacton-on-Sea Trafalgar Road, deep piling and lower levels from freshwater bed TM 146128 51°46′21.77″N 001°06′32.81″E shell Bithynia tentaculata 2 0.690 0.007 0.539 0.009 0.512 0.010 0.619 0.003 0.284 0.002 2 24 0.675 0.008 0.387 0.001 0.355 0.005 0.566 0.001 0.233 0.004 NEaar 1175b England Waverley Wood Bulk 1 SP 365715 52°20′25.34″N 001°27′56.47″W shell Bithynia troschelii 2 0.730 0.002 0.625 0.021 0.459 0.007 0.655 0.002 0.321 0.017 2 24 0.439 0.000 0.324 0.011 0.106 0.003 0.518 0.005 0.182 0.002 NEaar 3626b England Waverley Wood Bulk 1 SP 365715 52°20′25.34″N 001°27′56.47″W shell Bithynia troschelii 2 0.741 0.011 0.552 0.003 0.844 0.004 0.720 0.023 0.450 0.005 2 24 0.611 0.033 0.484 0.002 0.553 0.022 0.598 0.015 0.322 0.019 NEaar 3627b England Waverley Wood Bulk 1 SP 365715 52°20′25.34″N 001°27′56.47″W shell Bithynia troschelii 2 0.753 0.007 0.622 0.012 0.717 0.072 0.675 0.012 0.487 0.058 2 24 0.539 0.010 0.376 0.009 0.379 0.054 0.461 0.025 0.246 0.010 NEaar 3628b England Waverley Wood Bulk 1 SP 365715 52°20′25.34″N 001°27′56.47″W shell Bithynia troschelii 2 0.775 0.004 0.649 0.005 0.898 0.169 0.709 0.011 0.431 0.011 2 24 0.593 0.001 0.506 0.001 0.657 0.005 0.625 0.003 0.355 0.016 NEaar 3629b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Bithynia troschelii 2 0.731 0.041 0.506 0.005 0.312 0.175 0.705 0.017 0.351 0.010 2 24 0.606 0.057 0.426 0.003 0.317 0.032 0.640 0.005 0.346 0.005 NEaar 3630b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Bithynia troschelii 2 0.750 0.017 0.566 0.048 ND ND 0.691 0.144 0.410 ND 2 24 0.649 0.018 0.480 0.007 0.000 ND 0.651 0.030 0.341 0.008 NEaar 3631b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Bithynia troschelii 2 0.671 0.023 0.519 0.035 ND ND 0.681 0.018 0.426 0.043 2 24 0.550 0.030 0.452 0.006 0.000 0.000 0.650 0.001 0.330 0.018 NEaar 3632b England West Runton West Runton Freshwater Bed TG 182432 52°56′30.50″N 001°14′45.34″E shell Bithynia troschelii 2 0.728 0.003 0.593 0.039 ND ND 0.724 0.000 0.427 0.022 2 24 0.591 0.003 0.471 0.016 0.000 0.000 0.647 0.032 0.358 0.015 NEaar 4149b England Tattershall Castle Ip IIb, sample 76K TQ 598783 51°28′51.91″N 000°17′59.63″E shell Bithynia tentaculata 2 0.568 0.005 0.254 0.009 0.649 0.019 0.300 0.007 0.211 0.032 2 24 0.430 0.021 0.200 0.000 0.258 0.004 0.301 0.057 0.158 0.022 NEaar 4151b England Tattershall Castle Ip IIb, sample 76K TQ 598783 51°28′51.91″N 000°17′59.63″E shell Bithynia tentaculata 2 0.563 0.012 0.263 0.002 0.791 0.094 0.327 0.017 0.226 0.018 2 24 0.446 0.006 0.210 0.005 0.284 0.005 0.295 0.013 0.152 0.029 NEaar 4152b England Tattershall Castle Ip IIb, sample 76K TQ 598783 51°28′51.91″N 000°17′59.63″E shell Bithynia tentaculata 2 0.578 0.005 0.251 0.001 0.891 0.003 0.286 0.002 0.129 0.003 2 24 0.451 0.017 0.206 0.002 0.323 0.002 0.265 0.003 0.127 0.019 NEaar 4279b England Lion Pit Tramway Cutting Section 5, Sample 2 TQ 595748 51°28′51.91″N 000°17′59.63″E shell Bithynia tentaculata 2 0.651 0.027 0.377 0.073 0.813 0.012 0.443 0.006 0.197 0.008 2 24 0.447 0.003 0.271 0.020 0.469 0.016 0.385 0.003 0.150 0.007