Parent taxon: Tetrapodomorpha according to J. S. Nelson et al. 2016
See also Brazeau 2005, Davis et al. 2004, Holland et al. 2007, Jeffery 2006, Jeffery 2012, Johanson and Ahlberg 1998 and Johanson and Ahlberg 2001
Sister taxa: Canowindridae, Cricodus, Densignathus, Elginerpetidae, Elginerpetontidae, Elpistostegalia, Eotetrapodiformes, Gogonasus, Harajicadectes, Hynerpeton, Ichthyostegidae, Jakubsonia, Kenichthys, Livoniana, Metaxygnathus, Osteolepidida, Sinostega, Spodichthys, Tetrapoda, Tulerpetidae, Tungsenia, Ventastega
Subtaxa: Archichthys Barameda Letognathus Rhizodontidae Sauripteridae
Distribution:
• Carboniferous of Australia (2 collections), Belarus (3), Canada (1: Nova Scotia), Ireland (1), the Russian Federation (1), the United Kingdom (23), United States (4: Iowa, Montana, West Virginia)
• Devonian of Antarctica (1), Australia (1), Belarus (1), the United Kingdom (2), United States (1: Pennsylvania)
Total: 41 collections including 46 occurrences