Reptilia - Plesiosauria - Polycotylidae
Full reference: L. B. Albright, D. D. Gillette, and A. L. Titus. 2007. Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, part 2: Polycotylidae. Journal of Vertebrate Paleontology 27(1):41-58
Parent taxon: Polycotylidae according to L. B. Albright et al. 2007
See also Albright et al. 2007
Sister taxa: Ceraunosaurus, Cimoliasaurus leucoscopelus, Edgarosaurus, Manemergus, Mauriciosaurus, Pahasapasaurus, Palmulasaurinae, Plesiopleurodon, Polycotyilnae, Polycotylinae, Sulcusuchus, Thililua, Polycotylus ichthyospondylus tanais, Polycotylus brevispondylus
Subtaxa: none
Ecology: aquatic carnivore
Distribution: found only at Near Big Water, Tropic Shale (MNA loc. 1494) (Cretaceous of Utah)