Alternative combinations: Hemithlaeus opisthacus, Protoselene opisthaca, Protoselene opisthacus
Full reference: E. D. Cope. 1882. Some new forms from the Puerco Eocene. The American Naturalist 16:833-834
Total: 14 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.