Mammalia - Perissodactyla - Equidae
Alternative spellings: Onager (Hesperhippus), Onager (Hesperohippus)
Full reference: C. W. Hibbard. 1955. Pleistocene Vertebrates from the Upper Becerra (Becerra Superior) Formation, Valley of Tequixquiac, Mexico, with Notes on Other Pleistocene Forms. Contributions from the Museum of Paleontology, University of Michigan 12(5):47-96
Parent taxon: Equus according to C. W. Hibbard 1955
See also Mooser 1958 and Quinn 1957
Sister taxa: Equus (Amerhippus), Equus (Asinus) cumminsi, Equus (Hemionus), Equus (Parastilidequus), Equus (Sussemionus), Equus africanus, Equus alaskae, Equus asinus, Equus australis, Equus caballus, Equus calobatus, Equus capensis, Equus cedralensis, Equus coliemensis, Equus complicatus, Equus conversidens, Equus eisenmannae, Equus excelsus, Equus francisci, Equus fraternus, Equus fromanius, Equus giganteus, Equus holmesi, Equus intermedius, Equus jubatus, Equus laurentius, Equus leidyi, Equus mexicanus, Equus nalaikhaensis, Equus nearcticus, Equus nevadanus, Equus niobrarensis, Equus nobisi, Equus parastylidens, Equus pectinatus, Equus przewalskii, Equus pseudaltidens, Equus quagga, Equus sanmeniensis, Equus santaeelenae, Equus semiplicatus, Equus sivalensis, Equus tabeti, Equus taeniopus, Equus yunnanensis, Equus zebra, Hippotherium princeps, Hippotigris robustus, Hippotigris stenonis, Hippotigris grevyi, Equus (Dolichohippus) grevyi, Equus (Dolichohippus) enormis, Asinus africanus, Equus (Asinus) kiang, Onager onager
Subtaxa: Equus (Hesperohippus) mexicanus
Ecology: ground dwelling grazer
Distribution: found only at Moore Pit (Quaternary of Texas)