Mammalia - Perissodactyla - Equidae
Alternative combinations: Calippus (Calippus) proplacidus, Merychippus (Protohippus) proplacidus, Merychippus proplacidus, Protohippus proplacidus
Synonyms: Calippus francisi Hay 1924, Merychippus (Merychippus) francisi Hay 1924, Merychippus francisi Hay 1924
Full reference: H. F. Osborn. 1918. Equidae of the Oligocene, Miocene, and Pliocene of North America, iconographic type revision. Memoirs of the American Museum of Natural History 2(1):1-217
Belongs to Calippus according to B. J. MacFadden 1998
See also Forsten 1975, Galbreath 1953, Hay 1924, Hulbert 1988, Macdonald 1992, Osborn 1918, Quinn 1955, Stirton 1940 and Webb 1969
Sister taxa: none
Type specimens:
- Calippus proplacidus: AMNH 9115b, a partial skeleton (Upper and lower jaws of a young individual with milk dentition, mr, preformed, and a few fragments of the skeleton)
- Calippus francisi: Its type locality is TMM 31085, which is in a Miocene terrestrial horizon in the Oakville Formation of Texas.
Distribution:
• Miocene of United States (22: Florida, Nebraska, Texas collections)
Total: 22 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.