The Thin Elk Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Neogene period.
Fossil content Mammals Ungulates Ungulates reported from the Thin Elk Formation Genus Species Presence Material Notes ImagesCormohipparionC. occidentaleEd Ross Ranch Quarry, Bennett County, South Dakota.Skull (F:AM 71872).An equid.
See also
List of fossiliferous stratigraphic units in South Dakota Paleontology in South Dakota
References