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Class: Bivalvia. 11 specimens. 9 have both valves still connected. There is also 1 right and 1 left valve which look like they may have originally been 1 specimens due to their size and colour. Rounded triangular with a rounded ventral lip. Clear and defined concentric ridges and ranges in colour from yellow through to brown. Lives in clean sand, mud or gravel at a depth of approx. 73m.