Australia: The Land Where Time Began
Synapsida - syn. Therapsida (class)
| Order: Pelycosauria |
| Suborder: Caseasauria |
| Eupelycosauria |
| Therapsida |
| Barmosuchia |
| Dinocephalia |
| Anomodontia |
| Gorgonopsia |
| Therocephalia |
| Cynodontia |
Reptiles
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