| 翻訳と辞書 |
Rugops
''Rugops'' (meaning "wrinkle face") is a genus of theropod dinosaur which inhabited what is now Africa approximately 95 million years ago (Cenomanian stage of the Late Cretaceous). The discovery of a ''Rugops'' skull in Niger in 2000 was a crucial breakthrough in the understanding of the evolution of theropods in that area, and demonstrates that this landmass was still united with Gondwana at that stage in history.
==Description==
Though known only from a skull, ''Rugops'' has been estimated to have been about long based on comparisons with its relatives.〔Holtz, Thomas R. Jr. (2011) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages,'' (Winter 2010 Appendix. )〕 The skull bore armour or scales, and other bones had many blood vessels, causing Paul Sereno, who led the team that discovered the fossil, to say, "It's not the kind of head designed for fighting or bone-crushing", suggesting that it may have been a scavenger. The skull also bears two rows of seven holes each, of unknown purpose, although Sereno has speculated that they may have anchored some kind of crest or horns.
Like other abelisaurs, ''Rugops'' probably had very short arms. These were probably useless in fighting. They may have only been balance tools, items to counterbalance the dinosaur's head.
The type species is ''R. primus'' (meaning "first wrinkle-face"), discovered in the Cenomanian-age Echkar Formation. ''Rugops'' is believed to be an abelisaurid, and is related to ''Majungasaurus''.
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「Rugops」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.
|
|