Plesiosaurs from the Upper Cretaceous (Cenomanian–Turonian) Tropic Shale of Southern Utah, part 2: Polycotylidae; replacement names for the preoccupied genus Palmula and the subfamily palmulainae

L. BARRY ALBRIGHT III,*'1 DAVID D. GILLETTE,2 and ALAN L. TITUS3; lUniversity of North Florida, Department of Chemistry and Physics, 4567 South St. Johns Bluff Rd., Jacksonville, Florida 32224-2660 U.S.A., lalbrigh@unf.edu; 2Museum of Northern Arizona, Department of Geology, 3101 N. Fort Valley Rd., Flagstaff, Arizona 86001 U.S.A., dgillette@mna.mus.az.us; 3Grand Staircase-Escalante National Monument, 190 East Center St., Kanab, Utah, 84741 U.S.A., Alan_Titus@blm.gov