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''Crichtonsaurus'' is a dubious genus of herbivorous ankylosaurid ankylosaur dinosaur. It was named for Michael Crichton, the author of ''Jurassic Park''. It was an ankylosaurine, and it lived during the late Cretaceous Period of China. ==Taxonomy== The first fossils of the genus were discovered in 1999 at Xiafuxiang, near Beipiao in Liaoning Province, China. It was named and described by Dong Zhiming of the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences in 2002. The type species is ''Crichtonsaurus bohlini''. The generic name is in honor of Michael Crichton, American author whose novels include ''Jurassic Park'', ''The Andromeda Strain'' and others. The specific name honours Birger Bohlin, a Swedish paleontologist who during the 1930s took part in several paleontological expeditions to China. He described numerous Chinese ankylosaurs. As well as his work on dinosaurs and prehistoric mammals, Bohlin was part of the group that established the existence of Peking Man.〔http://www.michaelcrichton.com/foryoungerreaders-crichtonsaurus.html〕 The holotype, IVPP V12745, was found in a layer of the Sunjiawan Formation dating from the Cenomanian-Turonian. It consists of a left lower jaw with three preserved teeth. Additionally, two specimens have been referred: IVPP V12746, consisting of two neck vertebrae and a back vertebra; and LPM 101, a partial postcranial skeleton including four sacral vertebrae, seven tail vertebrae. a shoulder blade, a coracoid, a humerus, a thighbone, foot bones, a cervical halfring and osteoderms.〔Z.-M. Dong, 2002, "A new armored dinosaur (Ankylosauria) from Beipiao Basin, Liaoning Province, northeastern China", ''Vertebrata PalAsiatica'' 40(4): 276-285〕 In 2014, Victoria Megan Arbour pointed out that the referral of the additional specimens could not be justified because of a lack of overlapping material. She also failed to find any unique traits in the holotype itself, concluding that ''Crichtonsaurus bohlini'' was a ''nomen dubium''.〔Arbour, Victoria Megan, 2014, ''Systematics, evolution, and biogeography of the ankylosaurid dinosaurs''. Ph.D thesis, University of Alberta〕 The specimens referred to ''Crichtonsaurus bohlini'' are rather small. In 2010, Gregory S. Paul estimated their body length at 3.5 metres, their weight at half a tonne.〔Paul, G.S., 2010, ''The Princeton Field Guide to Dinosaurs'', Princeton University Press p. 231〕 ''Crichtonsaurus bohlini'' was placed in the Ankylosauridae and was a likely member of the Ankylosaurinae. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Crichtonsaurus」の詳細全文を読む スポンサード リンク
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