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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 Santanaraptor ： ウィキペディア英語版 Santanaraptor ''Santanaraptor'' (meaning "Santana Formation thief") is a genus of theropod dinosaur that lived in South America during the Early Cretaceous (late Aptian-early Albian), about 115-110 million years ago. It is known from a partial juvenile specimen recovered with fragments of mineralized soft tissue, including, muscle and skin tissue, but unfortunately not trace of the skins external covering, which was unearthed in 1996 from the Romualdo Formation (Santana Group) in the Ceará State, northeastern Brazil. While primarily known from hindquarter elements, the individual represented by the fossil may have reached in length. The fossil consists of bones from the pelvis, hindlimbs, and tail. These provide little information on its overall appearance. However, it was definitely a coelurosaur, and a few of its details suggest that it might be an ancestor of the tyrannosauroids. It is presumed to be similar to ''Dilong'' and ''Guanlong'' and that it had long arms, three fingered hands, and slim hindlimbs. ''Santanaraptor'' is thought by some paleontologists to be the first tyrannosauroid known from Gondwana.〔Holtz, Thomas R. Jr. (2011) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages,'' (Winter 2010 Appendix. )〕 ==Classification== The holotype (MN 4802-V) consists of 3 caudal vertebrae with chevrons, ischia, femora, tibia, fibula, pes, and soft tissue. The fossilized tissue includes a thin epidermis, muscle fibers, and possibly blood vessels. The type species is ''S. placidus'', first described by Kellner in 1999. The species epithet refers to , who founded the . ''Santanaraptor'' was originally thought to be a maniraptoran theropod when it was first discovered. However, it is now thought to be a basal coelurosaur based on several features present on the femur. ''Santanaraptor'' may have been closely related to ''Ornitholestes'', an earlier coelurosaur of the Late Jurassic, based on similarities in the ischium, a bone of the pelvis. 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「Santanaraptor」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.