†order Onychodontiformes (lobe-finned fish)
Osteichthyes - Onychodontiformes
Synonym: Struniiformes
Parent taxon: Sarcopterygii according to A. Mann et al. 2017
See also Johanson et al. 2007, Long 2011 and Lu and Zhu 2010
Sister taxa: Achoania, Akinetia, Coelacanthimorpha, Crossopterygii, Dipnoi, Dipnotetrapodomorpha, Guiyu, Lepidosireniformes, Ligulalepis, Onychodontia, Osteolepiformes, Psarolepis, Rhipidistia, Rhizodontida, Youngolepis
Subtaxa: Bukkanodus Onychodontidae
Ecology:
Distribution:
• Carboniferous of United States (1: West Virginia collection)
• Devonian of Australia (3), Canada (1: Ontario), China (1), the Russian Federation (1), United States (1: Iowa)
Total: 8 collections each including a single occurrence