Sinuopeidae
Introduction '''Sinuopeidae''' is an extinct family of fossil sea snails, Paleozoic gastropod mollusks.This family is unassigned to superfamily. This family consists of three following subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):* Sinuopeinae Wenz, 1938* Platyschismatinae Knight, 1956* Turbonellininae Knight, 1956
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