Varanopidae
Ophiacodontidae
Edaphosauridae
Ianthodon
Haptodus_garnettensis
Pantelosaurus
Cutleria
Tetraceratops
Dinocephalia
Hipposaurus
Raranimus
Biarmosuchus
Secodontosaurus
Cryptovenator
Ctenospondylus
Ctenorhachis
Sphenacodon_ferocior
Dimetrodon_milleri
Dimetrodon_limbatus
Bathygnathus_borealis
Dimetrodon_grandis