Alternative combinations: Calippus (Grammohippus) circulus, Merychippus circulus, Pliohippus circulus
Full reference: J. H. Quinn. 1955. Miocene Equidae of the Texas Gulf Coastal Plain. Bureau of Economic Geology, The University of Texas Report of Investigations 5516:1-102
Sister taxa: none
Type specimen: BEG 31191-10, a set of teeth (wer right cheek tooth series with p4-m3). Its type locality is Sam Houston, which is in a Miocene terrestrial horizon in the Fleming Formation of Texas.
• Miocene of United States (3: Texas collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.