Acritohippus tertius, Anchitherium avus, Anchitherium crenidens, Anchitherium gracilis, Anchitherium gracilis, Anchitherium longicristis, Anchitherium parvulus, Archaeohippus minutalis, Astrohippus martini, Calippus castilli, Calippus martini, Cormohipparion occidentale, Desmatippus, Desmatippus crenidens, Dinohippus fossulatus, Epihippus, Epihippus gracilis, Equus parvulus, Equus shoshonensis, Hipparion cragini, Hipparion occidentale, Hipparion sanfondensis, Hipparion sanjuanensis, Hipparion tehonense, Hippidium robustus, Hippodon vellicans, Hippotherium occidentale, Hypohippus avus, Kalobatippus avus, Kalobatippus gracilis, Merychippus castilli, Merychippus coalingensis, Merychippus fossulatus, Merychippus parvulus, Merychippus quartus, Merychippus socius, Merychippus tertius, Merychippus vellicans, Mesohippus annectens, Mesohippus antiquus, Mesohippus gracilis, Mesohippus longicristis, Mesohippus parvulus, Miohippus annectens, Miohippus antiquus, Miohippus longicristis, Nannippus cragini, Nannippus parvulus, Nannippus tehonensis, Neohipparion occidentale, Orohippus gracilis, Pachynolophus gracilis, Parahippus crenidens, Parahippus minutalis, Parahippus parvulus, Parahippus vellicans, Pediohippus, Pediohippus antiquus, Plesippus shoshonensis, Pliohippus castilli, Pliohippus fossulatus, Pliohippus martini, Pliohippus robustus, Protohippus, Protohippus castilli, Protohippus fossulatus, Protohippus martini, Protohippus parvulus, Protohippus robustus, Pseudhipparion

view taxonomic opinions