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O'Keefe, F.R.; Chiappe, L.M. (2011). «Viviparity and K-selected life history in a Mesozoic marine plesiosaur (Reptilia, Sauropterygia)». Science333 (6044): 870-873. PMID21836013. doi:10.1126/science.1205689.
issn.org
portal.issn.org
Albright, L.B. III; Gillette, D.D.; Titus, A.L. (2007). «Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, Part 2: Polycotylidae». Journal of Vertebrate Paleontology27 (1): 41-58. ISSN0272-4634. doi:10.1671/0272-4634(2007)27[41:PFTUCC]2.0.CO;2.
nih.gov
ncbi.nlm.nih.gov
O'Keefe, F.R.; Chiappe, L.M. (2011). «Viviparity and K-selected life history in a Mesozoic marine plesiosaur (Reptilia, Sauropterygia)». Science333 (6044): 870-873. PMID21836013. doi:10.1126/science.1205689.
