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pro vyhledávání: '"R. Dennis O'Keefe"'
Publikováno v:
Journal of Vertebrate Paleontology. 29:1306-1310
(2009). A plesiosaur containing an ichthyosaur embryo as stomach contents from the Sundance Formation of the Bighorn Basin, Wyoming. Journal of Vertebrate Paleontology: Vol. 29, No. 4, pp. 1306-1310.