OUTGROUP
Zatrachys
Xenobrachyops
Whatcheeria
Wetlugasaurus
Westlothiana
Wellesaurus
Watsonisuchus
Wantzosaurus
Vigilius
Ventastega
Vanastega
Valdotriton
Utegenia
Utaherpeton
Urocordylus
Uranocentrodon
Tupilakosaurus
Tulerpeton
Tuditanus
Tseajaia
Trimerorhachis
Triadobatrachus
Trematosuchus
Trematosaurus
Thoosuchus
Tertrema
Tersomius
Tatrasuchus
Tambachia
Tabanchuia
Stoschiosaurus
Stenotosaurus
Stegotretus
Stegops
Stanocephalosaurus
Sparodus
Solenodonsaurus
Sinobrachyops
Silvanerpeton
Siderops
Seym_sanjuanensis
Seym_baylorensis
Sclerocephalus
Scincosaurus
Schoenfelderpeton
Saxonerpeton
Saurople_scalaris
Saurople_pectinata
Saurople_bairdi
Sauravus
RHYTIDOSTEIDAE
Rhynchonkos
Rhinesuchus
Rhineceps
Rewanobatrachus
Quasicyclotosaurus
Quasicaecilia
Ptyonius
Pseudophlegethontia
Proterogyrinus
Procochleosaurus
Platystega
Platyrhinops
Platyoposaurus
Platyhistrix
PLAGIOSAURIDAE
Phonerpeton
Pholiderpeton
Phlegeth_longissima
Phlegeth_linearis
Petrolacosaurus
Peltobatrachus
Pelorocephalus
Pelodosotis
Pederpes
Paroto_pronus
Paroto_orenburgensis
Paroto_nasutus
Paroto_madagascariensis
Parioxys
Pariotichus
Paracyclotosaurus
Pantylus
Panderichthys
Paleothyris
Ophiderpeton
Ophiacodon
Onchiodon
Oestocep_granulosum
Oestocep_amphiuminum
Odonterpeton
Odenwaldia
Obruchevichthys
Neldasaurus
Micromelerpeton
Microbrachis
Micraroter
Metaxygnathus
Melanerpeton
Megalocephalus
Mazon_Creek_microsaur
Mastodonsaurus
Lyrocephaliscus
Lydekkerina
Luzocephalus
Loxomma
Llistrofus
Livoniana
Limnoscelis
Lethiscus
Leptorophus
Leiocephalikon
Lapillopsis
Laidleria
Kuttycephalus
Kupferzellia
Kotlassia
Konzhukovia
Keratobrachyops
Keraterpeton
Karaurus
Isodectes
Inflectosaurus
Ichthyostega
Iberospondylus
Hynerpeton
Hyloplesion
Hapsidopareion
Greererpeton
Gephyrostegus
Eusthenopteron
Euryodus_primus
Euryodus_peabodyi
Euryodus_dalyae
Euryodus_bonneri
Eugyrinus
Eucritta
Erythrobatrachus
Eryosuchus
Eryops
Eoscopus
Eoherpeton
Eogyrinus
Eocyclotosaurus
Eocaptorhinus
Eocaecilia
Elpistostege
Elginerpeton
Edops
Ecolsonia
Dvinosaurus
Dutuitosaurus
Dolichopareias
Doleserpeton
Dissorophus
Disco_pulcherrimus
Disco_austriacus
Diploceraspis
Diplocau_primus
Diplocau_magnicornis
Diceratosaurus
Diadectes
Dendrerpeton
Deltacephalus
Cyclotosaurus
Ctenerpeton
Crassigyrinus
Cosgriffius
Compsocerops
Colosteus
Coloraderpeton
Cochleoflorensis
Cochleobohemicus
Chomatobatrachus
Cherninia
Chenomilleri
Chenolewisi
Cheliderpeton
Celted_ibericus
Casineria
Carrolla
Cardio_sternbergi
Cardio_peabodyi
Captorhinus
Capetus
Caerorhachis
Cacops
Buettneria
Bruktererpeton
Broiliellus
Branchiosaurus
Brachydectes
Brachyops
Bothriceps
Benthosuchus
Batropetes
Batrachos_watsoni
Batrachos_henwoodi
Batrachos_browni
Batrachiderpeton
Baphetes
Banksiops
Balanerpeton
Asaphestera
Ariekanerpeton
Archeria
Archegosaurus
Aphaneramma
Apateon
Anthracosaurus
Angusaurus
Anconastes
Amphibamus
Almasaurus
Albanerp_inexpectatum
Adelospondylus
Adelogyrinus
Adamanterpeton
Actiobates
Acroplous
Acherontiscus
Acheloma
Acanthostomatops
Acanthostega