Anisomyon borealis
- Phylum: Mollusca
- Class: Gastropoda
- Order: Heterobranchia [Unassigned]
- Family: Siphonariidae
- Genus: Anisomyon
- Species: Anisomyon borealis Morton, 1842
- Common Name: False Limpet
Geological Range
Campanian
Paleogeographic Distribution
New Mexico to Montana
Stratigraphic Occurrences
- Campanian
- Cliff House Formation (NM)
- Pierre Shale (SD) [Campanian]
- Unknown Stage
- Carlile Shale (SD)
- Fort Pierre Formation (SD)
- Hygiene Formation (CO)
- Mesa Verde Formation (WY)
- Pierre Shale (MT)
- Pierre Shale (WY)
