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Fukuisaurus
''Fukuisaurus'' (meaning "Fukui lizard") is a genus of herbivorous dinosaur from the Early Cretaceous. It was an ornithopod which lived in what is now Japan.
Remains of ''Fukuisaurus'' were discovered in 1989, in the Kitadani formation in Katsuyama, Fukui Prefecture, in rocks from the Kitadani Formation, dating to the Barremian. The type species, ''Fukuisaurus tetoriensis'', was described in 2003 by Yoshitsugu Kobayashi and Yoichi Azuma. The genus name refers to Fukui; the specific name to the geological Tetori Group. The type specimens or cotypes are FPDM-V-40-1, a right maxilla, and FPDM-V-40-2, a right jugal. Further elements of a skull and a right sternal plate had been recovered.〔Kobayashi, Y. and Azuma, Y. (2003). "A new iguanodontian (Dinosauria; Ornithopoda), form the lower Cretaceous Kitadani Formation of Fukui Prefecture, Japan". ''Journal of Vertebrate Paleontology'' 23(1): 166-175〕 Since 2003 much more extensive finds have been made and much of the skeleton is now known.
''Fukuisaurus'' is a relatively small species. In 2010 Gregory S. Paul estimated the length at 4.5 metres, the weight at four hundred kilograms.〔Paul, G.S., 2010, ''The Princeton Field Guide to Dinosaurs'', Princeton University Press p. 286〕 Being a bipedal, optionally quadrupedal, animal, it was similar in general build to ''Iguanodon'', ''Ouranosaurus'' and ''Altirhinus''. According to the describers ''Fukuisaurus'' was exceptional in that its skull was not kinetic: the tooth-bearing maxilla would be so strongly fused to the vomer that a sideways chewing motion would have been impossible.
A cladistic analysis showed that ''Fukuisaurus'' was a basal member of the Hadrosauroidea, less derived than ''Altirhinus''.
==References==
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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