Alternative combinations: Equus (Protohippus) perditus, Merychippus (Protohippus) perditus, Merychippus perditus
Synonyms: Eoequus wilsoni Quinn 1955, Merychippus (Protohippus) profectus Cope 1889, Merychippus profectus Cope 1889, Pliohippus profectus Cope 1889, Protohippus profectus Cope 1889
Full reference: J. Leidy. 1858. Notice of Remains of Extinct Vertebrata, from the Valley of the Niobrara River, Collected during the Exploring Expedition of 1857, in Nebraska, under the Command of Lieut. G. K. Warren, U. S. Top. Eng., by Dr. F. V. Hayden, Geologist to the Expedition. Proceedings of the Academy of Natural Sciences of Philadelphia 10:15-89
See also Cope 1893, Forsten 1975, Gidley 1907, Hay 1902, Henshaw 1942, Hesse 1943, Hulbert 1988, Leidy 1858, Leidy 1873, Matthew 1909, Matthew 1924, Matthew and Stirton 1930, McGrew and Meade 1938, Osborn 1918, Prado and Alberdi 1996, Quinn 1955, Stirton 1933 and Stirton 1940
Sister taxa: none
Subtaxa: Protohippus perditus secundus
- Protohippus perditus: USNM 619, a partial skull (a fragment of an upper jaw containing the posterior four molars, P4-M3). Its type locality is Niobrara River (coll. Hayden 1857), which is in a Miocene terrestrial horizon in the Loop Fork Formation of Nebraska.
- Eoequus wilsoni: BEG 31183-30, -37, and -66, a skull (skull and mandible with disassociated p2).
- Protohippus profectus: AMNH 8349, a set of teeth (Six superior molars).
Ecology: ground dwelling grazer-browser
• Hemphillian of United States (1: Texas collection)
Total: 30 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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