Parent taxon: Tetrapoda according to R. R. Schoch et al. 2010
See also Arbez et al. 2019, Li and Cheng 1999 and Novikov et al. 2000
Sister taxa: Acanthostegidae, Aistopoda, Amphibia, Antlerpeton, Austrobrachyops, Austrobrachyops jenseni, Aytonerpeton, Baphetoidea, Brittagnathus, Caerorhachidae, Casineria, Characichnos, Collettosaurus, Colosteidae, Crassigyrinidae, Crucipes, Diploradus, Dipodiscus, Doragnathus, Eldeceeon, Embolomeri, Erpetopus, Gaiasia, Hemispondyla, Janusichnus, Janusichnus bifrons, Kirktonecta, Koilops, Laoporus, Limnosceloides, Limnosceloides brachycoles, Limnosceloides dunkardensis, Lunaepes, Merifontichnus, Mesanerpeton, Microsauropus, Miosauria, Namuncurania malarguense, Nasopus grimmi, Nothosaurops occiduus, Ossirarus, Paleosauropus, Parmastega, Perittodus, Plesiosaurus vaccinsulensis, Polyptychodon mackesoni, Reniformichnus, Reptiliomorpha, Romeriscus, Romeriscus periallus, Saurichnium parallelum, Sigournea, Silvanerpeton, Solenodonsaurus, Solidopus, Solidopus perissodactylus, Tambachichnium, Tantallognathus, Tetrapodium, Thecodontichnus, Theriodesmus, Typopus, Wangwusaurus, Wangwusaurus tayuensis, Westlothiana, Whatcheeriidae
Subtaxa: Bystrowianidae Chroniosuchidae Laosuchus
Ecology:
Distribution:
• Triassic of China (2 collections), Germany (2), Kyrgyzstan (1), Laos (1), the Russian Federation (15)
• Tatarian of the Russian Federation (2)
• Permian of China (5), Germany (1), the Russian Federation (37)
Total: 66 collections including 72 occurrences