_- Acanthostegidae
- Acherontiscidae
- Amphibamidae
- Anthracosauridae
- Archegosauridae
- Archeriidae
- Baphetidae
- Brachyopidae
- Brachystelechidae
- Branchiosauridae
- Capitosauridae
- Cochleosauridae
- Cocytinidae
- Colosteidae
- Crassigyrinidae
- Dendrerpetontidae
- Diadectidae
- Diplocaulidae
- Discosauriscidae
- Dissorophidae
- Edopidae
- Eobrachyopidae
- Eogyrinidae
- Eryopidae
- Gephyrostegidae
- Gymnarthridae
- Keraterpetontidae
- Lysorophidae
- Mastodonsauridae
- Metoposauridae
- Microbrachidae
- Micromelerpetontidae
- Odonterpetontidae
- Oestocephalidae
- Ophiderpetontidae
- Phlegethontiidae
- Plagiosauridae
- Proterogyrinidae
- Protobatrachidae
- Rhinesuchidae
- Rhytidosteidae
- Seymouriidae
- Solenodonsauridae
- Trematopidae
- Trematopsidae
- Trematosauridae
- Trihecatontidae
- Trimerorhachidae
- Tseajaiidae
- Tuditanidae
- Urocordylidae
- Whatcheeriidae
- Zatrachydidae