Reference
Albright, L. B. III., Gillette, D. D. and Titus, A. L. 2007b. Plesiosaurs from the Upper Cretaceous (Cenomanian–Turonian) Tropic Shale of southern Utah, part 2: Polycotylidae, Journal of Vertebrate Paleontology, 27(1), 41-58.
Albright, L. B. III., Gillette, D. D. and Titus, A. L. 2007b. Plesiosaurs from the Upper Cretaceous (Cenomanian–Turonian) Tropic Shale of southern Utah, part 2: Polycotylidae, Journal of Vertebrate Paleontology, 27(1), 41-58.