After Carroll, 1988, McKenna & Bell, 1997 and Shockey, 1997
<==o †Toxodontia |--+-- †Oldfieldthomasiidae [Acoelopidae] | `--+--o †Archaeopithecidae | | |--o †Acropithecus | | | `-- †A. rigidus (Ameghino, 1901) | | `-- †Archaeopithecus | `--o †Homalodotheriidae | |-- †Asmodus | |-- †Chasicotherium [Puntanotherium] | `-- †Homalodotherium `--+-- †Isotemnidae Ameghino, 1897 [paraphyletic?] `==o Notohippidae Ameghino, 1894 sensu Bond & Lopez, 1993 (Shockey, 1997) |-- †Pampahippus arenalesi |--+-- †Plexotemnus complicatissimus | `--o †Puelia | |-- †P. coarctatus | `-- †P. sigma `--+--o †Leontiniidae | |-- †Leontinia gaudryi | |-- †Scarrittia canquelensis | |-- †Ancylocoelus | |-- †Colpodon | |-- †Huilatherium | `-- †Henricofilholia `==o Notohippidae Ameghino, 1894 sensu Simpson, 1967 (Shockey, 1997) |?- †Notohippus Ameghino, 1891 |?- †Interhippus |?- †Moqueguahippus glycisma Shockey, Salas, Quispe, Flores, Sargis, Acosta, Pino, Jarica & Urbina, 2006 |?- †Nesohippus |?- †Perhippidium |?- †Stilhippus |-- †Eomorphippus obscurus `--+--o †Eurygenium Ameghino, 1895 [Eurygeniops Ameghino, 1897; Morphippus Ameghino, 1897] | |-- †E. latirostris Ameghino, 1895 | |-- †E. pacegnum Shockey, 1997 | `?- †E. imbricatus (Ameghino, 1897) [Morphippus imbricatus Ameghino, 1897] |--o †Argyrohippus | |-- †A. praecox | `-- †A. fraterculus |--o †Rhynchippus | |-- †R. brasiliensis Soria & Alvarenga, 1989 | |-- †R. equinus | `-- †R. pumilus Ameghino, 1897 `--+-- †Pascualihippus boliviensis Shockey, 1997 `-- †Toxodontidae
Reference(s):
- Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Carroll, R. L., 1988: Appendix. 594-648.
in Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - McKenna, M. C. & Bell, S. K., eds., 1997: Classification of mammals; above the species level.
–Columbia University Press, New York, 1997 - Shockey, B. J., 1997: Two new notoungulates (family Notohippidae) from the Salla beds of Bolivia (Deseadan: Late Oligocene): Systematics and functional morphology.
–Journal of Vertebrate Paleontology: Vol. 17, #3, pp. 584-599 - Shockey, B. J., Salas, R., Quispe, R., Flores, A., Sargis, E. J., Acosta, J., Pino, A., Jarica, N. J. & Urbina, M., 2006: Discovery of Deseadan fossils in the upper Moquegua Formation (late Oligocene-?early Miocene) of southern Peru.
–Journal of Vertebrate Paleontology: Vol. 26, #1, pp. 205-208