Full reference: L. I. Fitzinger. 1826. Neue Classification der Reptilien nach ihren Natürlichen Verwandtschaften. Einer Verwandtschafts-Tafel und einem Verzeichnisse der Reptilien-Sammlung des K. K. Zoologischen Museum’s zu Wien [New Classification of Reptiles According to their Natural Relationships. A Kinship Panel and a Directory of the Reptile Collection of the K. K. Zoological Museum in Vienna]. 1-66
Parent taxon: Ichthyosauria according to N. G. Zverkov 2022
See also Fitzinger 1826 and McGowan and Motani 2003
Sister taxa: Baracromia, Cetarthrosaurus, Ghuizhouichthyosaurus, Grippiidae, Guanlingichthyosaurus, Hueneosauria, Ichthyosaurus australis, Ichthyosaurus polyptychodon, Ichthyosaurus strombecki, Isfjordosaurus, Latipinnatoidea, Longipinnatoidea, Mixosauria, Naanchangasaurus, Omphalosauridae, Parvinatatoridae, Parvipelvia, Pessosaurus, Proteosauridae, Quasianosteosauridae, Rachitrema, Shastosauroidea, Sphaerodontes, Stenopterygius grandis, Thaisauridae, Thunnosauria, Utatsusauridae
Subtaxa: none
Ecology: nektonic carnivore
Distribution: there are no occurrences of Ichthyosauroidea in the database