†unranked clade Euplesiosauria O'Keefe 2001 (plesiosaur)
Full reference: F. R. O'Keefe. 2001. A cladistic analysis and taxonomic revision of the Plesiosauria (Reptilia: Sauropterygia). Acta Zoologica Fennica 213:1-63
Parent taxon: Plesiosauroidea according to F. R. O'Keefe 2001
Sister taxa: Cimoliosaurus limnophilus, Cryptoclidia, Cryptoclididae, Elasmosauridae, Franconiasaurus, Leptocleidia, Microcleididae, Opallionectes, Plesiopharos, Plesiopterys, Plesiosauridae, Plesiosaurus, Polycotylidae, Sthenarosaurus, Westphaliasaurus
Subtaxa: none
Ecology: aquatic carnivore
Distribution: there are no occurrences of Euplesiosauria in the database