Neotherapsida

The Neotherapsida are a clade of therapsids. The clade includes anomodonts and the more derived theriodonts, which include mammals.

Neotherapsida
Temporal range: Middle Permian–Holocene, 270–0 Ma (range includes mammals)
Non-mammalian synapsids died out 17.5 million years ago
Oligokyphus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Therapsida
Clade: Eutherapsida
Clade: Neotherapsida
Hopson, 1999
Subgroups

Distribution

Permian

In the Permian geological period, Neotherapsida lived in Germany, India, Madagascar, Niger, South Africa, Tanzania, United Kingdom, United States in Texas, and Zambia.[3]

Severodvinian

In the Severodvinian age of the Tatarian stage of the Permian time period, Neotherapsida lived in Russia.[3][4]

Triassic

In the Triassic, Neotherapsida lived in Antarctica, Argentina, Brazil, China, Germany, Lesotho, Morocco, Poland, Russia, South Africa, Tanzania, and United States in Arizona, Colorado, New Mexico, North Carolina, Texas, Utah, and Wyoming.[3]

Jurassic

In the Jurassic time period, basal Neotherapsida lived in Lesotho.[3]

Cretaceous

In the Cretaceous period, basal Neotherapsida lived in Australia and Russia.

Classification

The Neotherapsida were named and classified as a subgroup of the clade Eutherapsida by James Allen Hopson in 1999.[3][5]

Relatives
Main article: Dinocephalia

Taxonomy

Anomodontia
Otsheria, an anomodont
Anomocephalus, a primitive anomodont that retained a full set of teeth
Aulacocephalodon, a dicynodont, an herbivore with two tusks
Kannemeyeria, a dicynodont, was one of the first large herbivores of the Triassic.

Groups of Theriodontia
Scylacosaurus, a theriodont.
Mammalians, like humans and horses, evolved from theriodonts.


See also

References
  1. The Paleobiology Database: Anomodontia
  2. The Paleobiology Database: Theriodontia
  3. The Paleobiology Database: Neotherapsida
  4. Palæos Archived 2010-01-04 at the Wayback Machine
  5. J.A. Hopson. 1999. "Therapsids". Encyclopedia of Paleontology 2: 1256-1266


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