Parent taxon: Dipnoi according to J. S. Nelson et al. 2016
See also Sepkoski 2002
Sister taxa: Adelargo, Amadeodipterus, Apatorhynchus, Ballagadus, Cathlorhynchus, Celsiodon, Ceratodonti, Ceratodontidae, Ceratodontoidei, Chirodipteroidea, Coccovedus, Ctenodontiformes, Ctenodontoidei, Ctenodus, Devonesteus, Devonosteus, Diabolepidiformes, Dipnoiformes, Dipnorhynchiformes, Dipnorhynchina, Dipnorhynchoidei, Dipteri, Dipterida, Dipteroidei, Dongshanodus, Ferganoceratodus, Gnathorhizidae, Gosfordia, Harajicadipterus, Holodipterida, Jessenia, Limanichthys, Megapleuron, Melanognathus, Nielsenia, Occludus, Oervigia, Persephonichthys, Pinnalongus, Proceratodus, Protoceratodontidae, Protopteri, Ptychoceratodontidae, Rhinodipteridae, Sagenodontidae, Sinodipterus, Sirenoidei, Speonesydrionidae, Speonesydrionina, Speonysedrion, Synthetodus, Tarachomylax, Uranolophina, Uronemoidei, Westollrhynchus, Xylognathus
Subtaxa: Dipteridae Fleurantiidae Iranorhynchus Phaneropleuridae Rhynchodipteridae Sponysedrion Stomiahykidae
Ecology:
Distribution:
• Devonian of Australia (3 collections), Belarus (2), Belgium (1), Canada (2: Quebec, Yukon), Estonia (3), Germany (3), Iran (1), Latvia (3), Poland (2), the Russian Federation (2), United States (3: Colorado, Pennsylvania)
• Silurian of Norway (1), United States (2: Wisconsin)
Total: 28 collections including 34 occurrences