_- Anteosauridae
- Araeoscelidae
- Araeoscelididae
- Bauriidae
- Caseidae
- Champsosauridae
- Chiniquodontidae
- Chirotheriidae
- Cimoliasauridae
- Cistecephalidae
- Claudiosauridae
- Corosauridae
- Cryptoclididae
- Cyamodontidae
- Cynognathidae
- Dicynodontidae
- Diictodontidae
- Doswelliidae
- Drepanosauridae
- Edaphosauridae
- Elasmosauridae
- Endothiodontidae
- Eothyrididae
- Erpetosuchidae
- Erythrosuchidae
- Euparkeriidae
- Galeopsidae
- Galesauridae
- Gorgonopsidae
- Haptodontidae
- Hyphalosauridae
- Ichthyosauridae
- Ictidorhinidae
- Ictidosuchidae
- Kannemeyeriidae
- Kingoriidae
- Lagerpetonidae
- Leptocleididae
- Leptonectidae
- Leptopterygiidae
- Limnoscelidae
- Lupeosauridae
- Lystrosauridae
- Microcleididae
- Mixosauridae
- Nothosauridae
- Omphalosauridae
- Ophiacodontidae
- Ophthalmosauridae
- Ornithosuchidae
- Oudenodontidae
- Owenettidae
- Pachypleurosauridae
- Pareiasauridae
- Petrolacosauridae
- Phytosauridae
- Pistosauridae
- Placodontidae
- Plesiosauridae
- Pliosauridae
- Polycotylidae
- Poposauridae
- Procolophonidae
- Prolacertidae
- Protorosauridae
- Rhomaleosauridae
- Romeriidae
- Saltoposuchidae
- Shastasauridae
- Sphenacodontidae
- Sphenosuchidae
- Stagonolepididae
- Stahleckeriidae
- Stenopterygiidae
- Tangasauridae
- Tanystropheidae
- Tapinocephalidae
- Thalattosauridae
- Titanosuchidae
- Traversodontidae
- Trilophosauridae
- Trirachodontidae
- Tritylodontidae
- Varanopidae
- Whaitsiidae