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Jeholosaurus
''Jeholosaurus'' is a genus of ornithischian dinosaur from the Early Cretaceous Period. It is thought to have been a herbivorous small ornithopod, probably a basal member of the Euornithopoda.
== History of discovery ==
The first two ''Jeholosaurus'' specimens were found in 2000 at Lujiatun near Beipiao City, Liaoning Province, China, and named and described the same year by Xu Xing, Wang Xioalin and You Hailu. The type and only known species is ''Jeholosaurus shangyuanensis''. The generic name ''Jeholosaurus'' means "lizard from Jehol"; Jehol is the name of a historical province situated in western Liaoning and northern Hebei. The specific name refers to the geographical area of Shangyuan where the fossil site is located.〔
The type specimen of ''Jeholosaurus'', on which the genus is based, is IVPP V 12529. It was found in a layer of the early Yixian Formation, dating from the early Aptian, about a 125 million years old. The layers consist of fluvial sandstone interspersed with tuff and it is thought that an enormous volcanic eruption occurred burying everything within a fifty to sixty mile radius. The holotype contains a compressed skull and a partial postcranial skeleton. The second specimen, IVPP V 12530, was referred to the species. It consists of a better preserved, perhaps smaller, skull and some neck vertebrae.〔 Both specimens represent juvenile or at least subadult individuals.〔Paul, G.S., 2010, ''The Princeton Field Guide to Dinosaurs'', Princeton University Press p. 275〕
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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