This is a demonstration of the ISM freshwater mussel image gallery.
Class Bivalvia : Subclass Paleoheterodonta : Genus Villosa
Villosa iris (Rainbow)
The interior of the rainbow mussel shell has silvery white nacre that is very iridescent on the posterior half. The pseudocardinal teeth are small and triangular. The lateral teeth are long, thin, and strailght or slightly curved. The beak cavity is shallow.
Collection of the Illinois State Museum, photograph by Karen Little
ISM Accession #: 676692
Class Bivalvia : Subclass Paleoheterodonta : Genus Villosa
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