Sheepnose Mussel (Plethobasus cyphyus)
Where Listed: WHEREVER FOUND
Shell surface: Many low, wide bumps run in a single file line down the outer shell surface, from the beak (the swelling above the point where the 2 shell halves join) to the opposite shell edge. The rest of the shell surface is smooth (without bumps), and looks slightly pressed-in from the beak to the shell edge (similar to the pressed-in mark the length of your finger would make on wet clay), parallel to the row of bumps. Young mussels may have 2 raised ridges (one on either side of the pressed-in mark).
- States/US Territories in which the Sheepnose Mussel is known to or is believed to occur: Alabama , Illinois , Indiana , Iowa , Kentucky , Minnesota , Mississippi , Missouri , Ohio , Pennsylvania , Tennessee , Virginia , Wisconsin
- US Counties in which the Sheepnose Mussel is known to or is believed to occur: View All
- USFWS Refuges in which the Sheepnose Mussel is known to occur:
Ohio River Islands National Wildlife Refuge, Upper Mississippi River National Wildlife and Fish Refuge
|Status||Date Listed||Lead Region||Where Listed|
|04/12/2012||Great Lakes-Big Rivers Region (Region 3)|
» Federal Register Documents
No recovery information is available for the Sheepnose Mussel.
» Critical Habitat
No critical habitat rules have been published for the Sheepnose Mussel.
» Conservation Plans
|HCP Plan Summaries|
» Life History
No Life History information has been entered into this system for this species.
» Other Resources
NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.
ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.