^Albright, L.B. III; Gillette, D.D.; and Titus, A.L. Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, Part 2: Polycotylidae. Journal of Vertebrate Paleontology. 2007, 27 (1): 41–58. doi:10.1671/0272-4634(2007)27[41:PFTUCC]2.0.CO;2.引文使用过时参数coauthors (帮助)
^Albright, L.B. III; Gillette, D.D.; and Titus, A.L. 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. Journal of Vertebrate Paleontology. 2007, 27 (4): 1051. doi:10.1671/0272-4634(2007)27[1051:PFTUCC]2.0.CO;2.引文使用过时参数coauthors (帮助)