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| опистогирный (applied to the umbones [hooked prominences occurring at the apex of each half of the shell] of bivalve molluscs [Bivalvia] where these are so curved as to point in a posterior direction.) | |||
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| опистогирный (applied to the umbones [hooked prominences occurring at the apex of each half of the shell] of bivalve molluscs [Bivalvia] where these are so curved as to point in a posterior direction.) | |||