Sphaerium transversum
long fingernailclam
1
Bishop specimens
0
Type specimens
1949
First collected
1949
Last collected
2026
Last seen alive
From the collection
Alive today
150 research-grade iNaturalist sightings in the wild since 2000. Most recent first.
2026-10-24
CTH-N, Cassville, WI, US
(c) Dan Jackson, some rights reserved (CC BY-NC)
2026-10-24
Lynn Hollow Ln, Cassville, WI, US
(c) Dan Jackson, some rights reserved (CC BY-NC)
2026-10-07
Riverfront Regional Park, Fridley, MN, USA
(c) R. Lucine, some rights reserved (CC BY-NC)
2026-10-06
Union Hollow Rd. boat ramp, Lauderdale County, AL, USA
(c) Jeff Garner, some rights reserved (CC BY-NC)
2026-08-14
Frontenac State Park, Florence Township, MN, USA
(c) R. Lucine, some rights reserved (CC BY-NC)
2026-05-18
East River Flats Park, Minneapolis, MN, USA
(c) R. Lucine, some rights reserved (CC BY-NC)
2026-04-24
North Mississippi Regional Park, Minneapolis, MN, USA
(c) R. Lucine, some rights reserved (CC BY-NC)
2026-03-30
Big Blue River, Wymore, NE, US
(c) Owen Reeves, some rights reserved (CC BY-NC)