Typotheria
Encyclopedia
Typotheria is a suborder of the extinct
mammal
ian order Notoungulata
and includes five families: Archaeopithecidae
, Campanorcidae
, Interatheriidae
, Mesotheriidae
, and Oldfieldthomasiidae
. Cifelli 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.
Extinction
In biology and ecology, extinction is the end of an organism or of a group of organisms , normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point...
mammal
Mammal
Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...
ian order Notoungulata
Notoungulata
Notoungulata is an extinct order of hoofed, sometimes heavy bodied mammalian ungulates which inhabited South America during the Paleocene to Pleistocene, living from approximately 57 Ma to 11,000 years ago.-Taxonomy:...
and includes five families: Archaeopithecidae
Archaeopithecidae
Archaeopithecidae is an extinct family comprising two genera of notoungulate mammals, Acropithecus and Archaeopithecus, both known from the early Eocene of South America .-References:...
, Campanorcidae
Campanorco
Campanorco is an extinct genus of notoungulate mammal from the early Eocene of South America and the only member of the family Campanorcidae .-References:...
, Interatheriidae
Interatheriidae
Interatheriidae is an extinct family of notoungulate mammals from South America. Interatheriids are known from the Paleocene or Eocene through the Miocene .-References:...
, Mesotheriidae
Mesotheriidae
Mesotheriidae is an extinct family of notoungulate mammals known from the Eocene through the Pleistocene of South America. Mesotheriids were small to medium-sized herbivorous mammals adapted for digging.-Characteristics:...
, and Oldfieldthomasiidae
Oldfieldthomasiidae
Oldfieldthomasiidae is an extinct family of notoungulate mammals known from the Paleocene and Eocene of South America....
. Cifelli indicated that Typotheria would be paraphyletic if it excluded members of the suborder Hegetotheria
Hegetotheria
Hegetotheria is a suborder of the extinct mammalian order Notoungulata and includes two families, Archaeohyracidae and Hegetotheriidae. Cifelli indicated that the suborder Typotheria would be paraphyletic if it excluded members of Hegetotheria and he advocated inclusion of the hegetothere families...
and he advocated inclusion of the hegetothere families Archaeohyracidae and Hegetotheriidae in Typotheria.