
Belongs within: Perissodactyla.
The Chalicotheriidae are a group of perissodactyls known from the Eocene to Pleistocene of Eurasia and North America, with a limited record from Africa. Members of this group possessed feet with large fissured claws rather than hooves and may have been upright browsers in the manner of gorillas or ground sloths.
<==Chalicotheriidae |--Borissiakia betpakdalensis Borissiak 1946 [=Phyllotillon betpakdalensis]C75 |--Nestoritherium Kaup 1859SM93 |--GrangeriaHD04 |--SchizotheriumHD04 | |--S. priscumC75 | `--S. turgaicumC75 |--PhyllotillonB78 | |--P. bavaricum (von Koenigswald 1932)B78, C75 [=Metaschizotherium bavaricumB78] | `--P. naricusC75 |--Ancylotherium Gaudry 1863SM93 | | i. s.: A. hennigi (Dietrich 1942) [=Metaschizotherium hennigi; incl. M. transvaalensis George 1950]B78 | | A. pentelicumB78 | `--A. (Metaschizotherium von Koenigswald 1932)C75 | `--A. (M.) fraasi (von Koenigswald 1932) [=Metaschizotherium fraasi]C75 |--Moropus Marsh 1877HD04, D07 | |--M. elatus Marsh 1877 [incl. M. parvus Barbour 1909, M. petersoni Holland 1908]C75 | |--M. hollandiD07 | |--M. matthewiD07 | |--M. merriamiD07 | `--M. oregonensisD07 `--Chalicotherium Kaup 1833D07 |--C. gigantiumD07 |--C. goldfussiC75 |--C. grande [=Macrotherium grande]B78 |--C. pilgrimiB78 |--C. rusingense Butler 1962B78 |--C. salinumD07 `--C. wetzleriB78
*Type species of generic name indicated
References
[B78] Butler, P. M. 1978. Chalicotheriidae. In: Maglio, V. J., & H. B. S. Cooke (eds) Evolution of African Mammals pp. 368–370. Harvard University Press: Cambridge (Massachusetts).
[C75] Coombs, M. C. 1975. Sexual dimorphism in chalicotheres (Mammalia, Perissodactyla). Systematic Zoology 24 (1): 55–62.
[D07] Dixon, D. 2007. The Complete Illustrated Encyclopedia of Dinosaurs & Prehistoric Creatures. Hermes House: London.
[HD04] Hooker, J. J., & D. Dashzeveg. 2004. The origin of chalicotheres (Perissodactyla, Mammalia). Palaeontology 47 (6): 1363–1386.
[SM93] Stucky, R. K., & M. C. McKenna. 1993. Mammalia. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 739–771. Chapman & Hall: London.