Mammalia - Perissodactyla - Palaeotheriidae
Parent taxon: Equoidea according to J. A. Remy 2012
See also Astibia et al. 2000, Badiola and Cuesta 2008, Cope 1881, Cope 1889, Flower and Lydekker 1891, Froehlich 2002, Hooker 1986, Hooker and Dashzeveg 2004, Prothero and Schoch 1989 and Remy 2000
Sister taxa: Cymbalophus, Equidae, Pachynolophidae
Subtaxa: Cantabrotherium Eurohippus Franzenium Hyracotherium Iberolophus Leptolophus Orolophus Pachynolophinae Palaeotheriinae Paraplagiolophus Propachynolophus Pseudopalaeotherium
Ecology: ground dwelling frugivore-folivore
Distribution:
• Oligocene of France (6 collections), Germany (1), Spain (2), Switzerland (1)
• Eocene of Belgium (2), Bulgaria (1), China (4), France (83), Germany (48), Greece (1), Portugal (1), Spain (21), Switzerland (11), the United Kingdom (31), United States (196: Colorado, Mississippi, New Mexico, Texas, Utah, Wyoming)
Total: 409 collections including 662 occurrences