Phylum Mollusca
Class Pelecypoda (Lamellibranchia)
?? Grammysia dubia Fenton 1924
All specimens are internal casts of the shell - here shown is left valve view of select specimens. L=left valve, R=single specimen right valve. Customary orientation is to view specimen along line of symmetry (between the valves) with hinge line uppermost and beaks (umbo) directed away (maybe only a slight indication) to the anterior. The right valve is then to the right (and the posterior is up!).
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