†infraclass Onychodontida Andrews 1973 (lobe-finned fish)
Parent taxon: Sarcopterygii according to R. van der Laan 2019
See also Nelson et al. 2016 and Upeniece 1995
Sister taxa: Achoania, Actinistia, Actinistia, Akinetia, Dipnomorpha, Dipnotetrapodomorpha, Guiyu, Lepidosireniformes, Ligulalepis, Onychodontia, Osteolepidida, Psarolepis, Ptyctolepis, Rhipidistia, Rhizodontida, Tetrapoda, Belonorhynchi, Platysomi, Lepidostei, Taxistia, Eugnathi, Haplistia, Belonostomi, Amii, Heterocerci, Cyclolepidi, Coelacanthini, Osteolepidae, Saurodipterini, Polypterini
Subtaxa: Onychodontiformes
Ecology: planktonic suspension feeder