Parent taxon: Crossopterygii according to C. R. Eastman 1903
See also Daly 1973, Hay 1902, Heintz 1934, Jordan 1963, Woodward 1891 and Young et al. 1992
Sister taxa: Achoania, Actinistia, Akinetia, Coelacanthimorpha, Dipnotetrapodomorpha, Guiyu, Lepidosireniformes, Ligulalepis, Onychodontia, Psarolepis, Ptyctolepis, Rhipidistia, Rhizodontiformes, Tetrapoda, Youngolepis, Haplistia, Taxistia, Saurodipterini, Belonorhynchi, Lepidostei, Eugnathi, Belonostomi, Platysomi, Coelacanthini, Heterocerci, Cyclolepidi, Polypterini, Amii
Subtaxa: Diplopterus Megalichthys Parabatrachus
Ecology:
Distribution:
• Permian of Norway (1 collection)
• Carboniferous of the United Kingdom (8), United States (1: Iowa)
• Devonian of Antarctica (12), Australia (2), China (1), United States (1: Pennsylvania), Venezuela (1)
Total: 27 collections each including a single occurrence