Genus Quadrula
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Quadrula
Quadrula nodulata (Wartyback)
The interior of the wartyback mussel shell has pearly white nacre that is iridescent posteriorly. The pseudocardinal teeth are large and serrated. The lateral teeth are short but heavy and serrated. The beak cavity is deep.
Collection of the Illinois State Museum, photograph by Karen Little
ISM Accession #: 677743
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Quadrula
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