Biology:Typotheria

Typotheria; Temporal range: Late Paleocene–Middle Pleistocene PreЄ Є O S D C P T J K Pg N
	Mesotherium cristatum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Suborder:	†Typotheria; Zittel, 1892
Families
	†Archaeohyracidae; †Archaeopithecidae; †Campanorcidae; †Hegetotheriidae; †Interatheriidae; †Mesotheriidae; †Notopithecidae; †Oldfieldthomasiidae;

Short description: Extinct suborder of mammals

Typotheria is a suborder of the extinct mammalian order Notoungulata and includes five families: Archaeopithecidae, Campanorcidae, Interatheriidae, Mesotheriidae, and Oldfieldthomasiidae. Cifelli^[2] indicated that Typotheria would be paraphyletic if it excluded members of the suborder Hegetotheria and he advocated inclusion of the hegetothere families Archaeohyracidae and Hegetotheriidae in Typotheria.

References

↑ McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, pp 462-465. ISBN:0-231-11013-8
↑ Cifelli, Richard L. 1993. The phylogeny of the native South American ungulates. pp. 195-216 in F. S. Szalay, M. J. Novacek and M. C. McKenna (eds.) Mammal Phylogeny, Volume 2, Placentals. Springer-Verlag, New York. ISBN:0-387-97853-4

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Typotheria^[1] Temporal range: Late Paleocene–Middle Pleistocene PreЄ Є O S D C P T J K Pg N

Mesotherium cristatum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Suborder:	†Typotheria Zittel, 1892
Families
†Archaeohyracidae †Archaeopithecidae †Campanorcidae †Hegetotheriidae †Interatheriidae †Mesotheriidae †Notopithecidae †Oldfieldthomasiidae