Syodon

Syodon biarmicum
Meaning: ?
Mass: ?
Length: ?
Lived: In Russia in the late Permian (around 286 million years ago)
Relationships in detail: Anteosauria
                                     |- Archaeosyodon
                                     ` - + - Brythopodidae
                                          |    |- Chthomaloporus
                                          |    ` - Brithopus
                                          ` - + - Deuterosaurus
                                               ` - Anteosauridae
                                                    |- Syodontidae
                                                    |   |- Notosyodon
                                                    |   ` - Syodon
                                                    ` - + - Titanophoneus
                                                         ` - Anteosaurinae
                                                              |- Anteosaurus
                                                              ` - Doliosauriscus

Non-dinosaur

Syodon biarmicum is a therapsid, a group of synapsids that gave rise to mammals (although Anteosauria is not one of their ancestors). This species is only known from two skulls.