†family Undorosauridae Efimov 1999 (ichthyosaur)
Reptilia - Ichthyosauria - Undorosauridae
Full reference: V. M. Efimov. 1999. A new family of Ichthyosaurs, the Undorosauridae fam. nov. from the Volgian stage of the European part of Russia. Paleontological Journal 33(2):174-181
Parent taxon: Shastosauroidea according to V. M. Efimov 1999
Sister taxa: none
Subtaxa: none
Ecology: nektonic carnivore
Distribution: there are no occurrences of Undorosauridae in the database