PaleoDB taxon number: 170536
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
Sister taxa: none
Type specimen: MNA V9445, a partial skeleton (anterior part of rostrum, anterior part of mandible, right and left clavicle with fused interclavicle, right and left scapula, right and left coracoid, right hu). Its type locality is Big Water, Tropic Shale, which is in a Cenomanian/Turonian marine shale in the Tropic Shale Formation of Utah.
Ecology: aquatic carnivore