Vertebrata - Stegocephali

Parent taxon: Tetrapoda according to R. R. Schoch et al. 2010

Sister taxa: Allopus, Amphibia, Collettosaurus, Crucipes, Densignathus, Dipodiscus, Elginerpeton, Metaxygnathus, Ossinodus, Reptiliomorpha, Steganoposaurus, Temnospondyli, Typopus, Westlothiana, Ymeria

Subtaxa: Bystrowianidae, Chroniosuchidae

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Ecology: