†subclass Ichthyopterygia Owen 1840 (reptile)
Parent taxon: Reptilia according to S. H. Haughton and A. S. Brink 1954
Sister taxa: Amblyglossae, Anapsida, Coeluria, Cunichnoides, Enaliosauria, Eupalamopus, Eureptilia, Ganocephala, Glauconia, Gymnarthria, Ischyrotherium, Isocampe, Kintneria, Macelognatha, Omosauria, Oolithes, Ornithocephala, Parareptilia, Placodontomorpha, Plectropterna, Proganosauromorpha, Pythonomorpha, Rhamphosauria, Rhizodonta, Sauranodonta, Streptosauria, Testudinata, Theromorpha, Tocosauria, Triaenopus
Subtaxa: Eoichthyosauria, Euichthyopterygia, Heteropinnatoidea, Hupehsuchidae, Ichthyosauria, Latipinnatoidea, Mixosauroidea
Ecology: nektonic carnivore