B. C. Wilhelm and F. R. O'Keefe. 2010. A new partial skeleton of a cryptocleidoid plesiosaur from the Upper Jurassic Sundance Formation of Wyoming. Journal of Vertebrate Paleontology 30(6):1736-1742
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F. R. O'Keefe, H. P. Street, and J. P. Cavigelli, J. J. Socha, R. D. O.'Keefe. 2009. A plesiosaur containing an ichthyosaur embryo as stomach contents from the Sundance Formation of the Bighorn Basin, Wyoming. Journal of Vertebrate Paleontology 29(4):1306-1310
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F. R. O'Keefe and W. Wahl, Jr. 2003. Current taxonomic status of the plesiosaur Pantosaurus striatus from the Upper Jurassic Sundance Formation, Wyoming. Paludicola 4(2):37-46
F. R. O'Keefe and W. Wahl. 2003. Current taxonomic status of the plesiosaur Pantosaurus striatus from the Upper Jurassic Sundance Formation, Wyoming. Paludicola 4(2):37-46