Genus Obovaria
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Obovaria
Obovaria olivaria (Hickorynut)
The interior of the hickorynut mussel shell has white nacre that is iridescent at the posterior side. The pseudocardinal teeth are triangular and widely divergent. The lateral teeth are heavy, long, and curved. The beak cavity is shallow.
Collection of the Illinois State Museum, photograph by Karen Little
ISM Accession #: 676952
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Obovaria
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