Full reference: O. C. Marsh. 1889. Discovery of Cretaceous Mammalia. Part II. American Journal of Science 38:177-180
Sister taxa: none
Type specimen: Its type locality is Peterson's Quarry, which is in a Lancian terrestrial horizon in the Lance Formation of Wyoming
Ecology: aquatic omnivore
Total: 18 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.