Parent taxon: Sarcopterygii 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: Achoania, Actinistia, Akinetia, Coelacanthimorpha, Dipnoi, Dipnomorpha, Dipnotetrapodomorpha, Guiyu, Lepidosireniformes, Ligulalepis, Onychodontia, Onychodontida, Onychodontiformes, Osteolepidida, Osteolepiformes, Psarolepis, Ptyctolepis, Rhipidistia, Rhizodontiformes, Tetrapoda, Youngolepis, Coelacanthini, Platysomi, Belonostomi, Heterocerci, Saurodipterini, Haplistia, Polypterini, Eugnathi, Belonorhynchi, Taxistia, Cyclolepidi, Lepidostei, Amii, Osteolepidae
Subtaxa: Archichthys Barameda Letognathus Sauripteridae
Ecology:
Distribution:
• Carboniferous of Australia (2 collections), Belarus (3), Canada (1: Nova Scotia), United States (1: Iowa)
• Devonian of Antarctica (1), Belarus (1)
Total: 9 collections including 11 occurrences