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Hainosaurus
''Hainosaurus'' is an extinct genus of marine lizard belonging to the mosasaur family. It is one of the largest mosasaurs, though its size has been revised more than once. At first it was estimated to be , and the largest mosasaurid.〔Russell, D. A. 1967. Systematics and morphology of American mosasaurs (Reptilia, Sauria). Yale Univ. Bull 23:241. pp.〕 During the 1990s, its size was revised to long;〔Lingham-Soliar, T. 1998. Unusual death of a Cretaceous giant. Lethaia 31:308–310.〕 more recently, Johan Lindgren estimated that it reached lengths of up to .〔Johan Lindgren (2005) The first record of ''Hainosaurus'' (Reptilia: Mosasauridae) from Sweden. Journal of Paleontology: Vol. 79, No. 6, pp. 1157–1165〕 It was one of the top marine predators of the Late Cretaceous. Like other giant mosasaurs, this giant predator preyed on turtles, plesiosaurs, pterosaurs, cephalopods, sharks, fish, and smaller mosasaurs.
''Hainosaurus'' is a member of the subfamily Tylosaurinae, and it is related to the wholly North American ''Tylosaurus''. However, it has more vertebrae from the neck to the part of the tail with chevrons (53) than ''Tylosaurus'' (35). Both genera are large marine superpredators. ''Hainosaurus tail has less chevron-bearing vertebrae, making it shorter than that of ''Tylosaurus''. The only known and type species of ''Hainosaurus'' is ''H. bernardi'', named after the Belgian Léopold Bernard, owner of the phosphate chalk exploitation where the fossil was unearthed.〔Dollo, L., 1891. La vie au sein des mers. Paris, Librairie J.B. Baillière et Fil〕
Image:Hainosaurus073.jpg|Restoration
File:Mosasaurus skull.jpg|Specimen MNHN 1896-15 jaw fragments, MNHN, Paris
== See also ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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