Genus Lampsilis
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Lampsilis
Lampsilis siliquoidea (Fatmucket)
The fatmucket mussel shell is elliptical and compressed. The surface is smooth, yellow, yellowish green, or less often, tan, with green rays. It grows to five inches in length. This species lives in the mud, sand, or gravel of lakes and small to medium-sized streams. It has occurred throughout Illinois.
Conservation status: common and widespread
Taxonomy: Order Unionoida; Superfamily Unionoidea; Family Unionidae; Subfamily Lampsilinae
Collection of the Illinois State Museum, photograph by Robert Warren
ISM Accession #: 675773
Class Bivalvia
: Subclass Paleoheterodonta
: Genus Lampsilis
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