|Inostrancevia, a therapsid|
Characteristics[change | change source]
Evolution[change | change source]
The dicynodonts were now a single family of large stocky herbivores, the Kannemeyeridae. The medium-sized cynodonts (including carnivorous and herbivorous forms), flourished worldwide in the early to middle Triassic. They died out across much of Pangea before the end of the Upper Triassic. Some survived for a while in the wet equatorial band and the south.
At least three groups of eucynodonts survived. They appeared in the Upper Triassic. The extremely mammal-like family, the Tritylodonts, survived into the Lower Cretaceous. Another group, Morganucodon and its relatives, were mammaliaformes. That is, their descendants became the mammals.
Taxonomy[change | change source]
- Class Synapsida
- ORDER THERAPSIDA *
- Class Mammalia
References[change | change source]
- They are not reptiles.
|Wikispecies has information on: Therapsida.|
- Kemp T.S. 2005. The origin and evolution of mammals. Oxford University Press
- Benton M.J. 2004. Vertebrate Paleontology. 3rd ed. Blackwell, Oxford.
- Carroll R.L. 1988 Vertebrate Paleontology & Evolution. Freeman N.Y.
- Romer A.S. 1966. Vertebrate Paleontology. 3rd ed, University of Chicago Press.