The fat mucket is found from the Mississippi River drainage from New York to Minnesota. It occurs south to Arkansas but does not occur from the Tennessee and Cumberland River systems. In the St. Lawrence River system it is found in the Canadian Interior Basin. Lampsilis siliquoidea is also found in Montana and eastern Colorado.
In Michigan L. siliquoidea is found in drainages throughout the state, both in the upper and lower peninsulas.
Biogeographic Regions: nearctic (Native )
- Burch, J. 1975. Freshwater unionacean clams (Mollusca: Pelecypoda) of North America. Hamburg, Michigan: Malacological Publications.
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