Synapsid
From the Simple English Wikipedia, the free encyclopedia that anyone can change
| Synapsids Fossil range: Late Carboniferous - Middle Cretaceous (non-mammalian) |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Dimetrodon grandis skeleton at the National Museum of Natural History of U.S.A.
|
||||||||||||
| Scientific classification | ||||||||||||
|
||||||||||||
| Orders & Suborders | ||||||||||||
For complete phylogeny, see text. |
Synapsids ('fused arch'), also known as Theropsids ('beast face'), is a taxonomical class of animals. This class includes mammals and other animals which are close to mammals. The non-mammal animals in the group were described as 'mammal-like reptiles'. A better name for them is "stem-mammals". Synapsids are one of the two major groups of amniote. The other group is the sauropsids. They developed one opening in their skull behind each eye, about 324 million years ago during the late Carboniferous Period.
[change] Taxonomy
- Series Amniota
- Class †SYNAPSIDA *
- Order †Pelycosauria *
- Suborder †Caseasauria
- Suborder †Eupelycosauria *
- Family †Varanopseidae
- Family †Ophiacodontidae
- Family †Edaphosauridae
- Family †Sphenacodontidae *
- Order †Therapsida *
- Suborder †Biarmosuchia *
- Suborder †Dinocephalia
- Suborder †Anomodontia
- Suborder †Gorgonopsia
- Suborder †Therocephalia
- Suborder †Cynodontia *
- Family †Probainognathidae
- Superfamily †Chiniquodontoidea *
- Order †Pelycosauria *
- Class MAMMALIA
- Class †SYNAPSIDA *
Look up Synapsida in Wikispecies, a directory of species
