Genus Lampsilis
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Lampsilis
Lampsilis cardium (Plain Pocketbook)
The interior of the plain pocketbook mussel shell has white or bluish-white nacre (occasionally pink or salmon with iridescence). The beak cavity is deep. Pseudocardinal teeth are relatively large, elevated in young specimens and worn smooth in older ones. Lateral teeth are straight to curved, striated, and of medium length.
Collection of the Illinois State Museum, photograph by Robert Warren
ISM Accession #: 675880
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Lampsilis
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