This is a demonstration of the ISM freshwater mussel image gallery.

Genus Utterbackia

Class Bivalvia : Subclass Paleoheterodonta : Genus Utterbackia

Utterbackia imbecillis (Paper pondshell)
The interior of the paper pondshell mussell shell has posteriorly iridescent white or bluish white nacre. Both valves are without teeth. The hinge line is straight and thin.

Collection of the Illinois State Museum, photograph by Karen Little
ISM Accession #: 678952

Class Bivalvia : Subclass Paleoheterodonta : Genus Utterbackia

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