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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Micropachycephalosaurus ： ウィキペディア英語版 Micropachycephalosaurus ''Micropachycephalosaurus'' (meaning "small thick headed lizard") is a monotypic genus of ceratopsian dinosaur. It lived in Shandong Province, China during the Late Cretaceous period (between 70.6 and 68.5 million years ago).〔Holtz, Thomas R. Jr. (2011) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages,'' (Winter 2010 Appendix. )〕 The incomplete skeleton of the single specimen was found on a cliff southwest of Laiyang. It was bipedal and herbivorous, and currently has the longest generic name of any dinosaur. Ironically, it was also among the smallest of the dinosaurs, at a little over 1 meter (3.3 feet) long. ==Taxonomy== The genus contains only the type species, ''Micropachycephalosaurus hongtuyanensis''. Paleontologist Dong Zhiming originally described it as a member of the Pachycephalosauria, a group of bipedal dome-headed herbivores. However, re-evaluation of the family Pachycephalosauridae by Sullivan in 2006 cast doubt on this assignment.〔Sullivan, R.M. (2006). "A taxonomic review of the Pachycephalosauridae (Dinosauria: Ornithischia)." ''New Mexico Museum of Natural History and Science Bulletin'', 35: 347-365.〕 Further study of the original specimens by Butler and Zhao in 2008 also failed to find any characteristics linking ''Micropachycephalosaurus'' with the pachycephalosaurs. The one piece of evidence that could provide this link, the supposedly thickened skull roof, was missing from the fossil collection the scientists examined, and so could not be used to support or refute its original classification. Butler and Zhao therefore classified it as an indeterminate member of the Cerapoda.〔 In 2011, cladistic analysis performed by Butler ''et al.'' showed that ''Micropachycephalosaurus'' is a basal member of the Ceratopsia. 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「Micropachycephalosaurus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.