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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 Rubeosaurus ： ウィキペディア英語版 Rubeosaurus ''Rubeosaurus'' (meaning "bramble or thornbush lizard") is a genus of ceratopsian dinosaur which lived in what is now North America. ''Rubeosaurus'' fossils have been recovered from strata of the upper Two Medicine Formation of the Upper Cretaceous of Montana, dating to 74.6 million years ago.〔 ==History of discovery== The holotype specimen, USNM 11869, is composed of a partial parietal and was discovered by George F. Sternberg in 1928. A second specimen, MOR 429, is composed of a partial skull including a partial left premaxilla, co-ossified left and right nasals with horncore, partial left postorbital with horncore, and a nearly complete right parietal with two spikes. It was discovered in 1986.〔Andrew T. McDonald & John R. Horner, (2010). "New Material of "Styracosaurus" ovatus from the Two Medicine Formation of Montana". Pages 156–168 in: Michael J. Ryan, Brenda J. Chinnery-Allgeier, and David A. Eberth (eds), ''New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium'', Indiana University Press, Bloomington and Indianapolis, IN.〕 This genus was named by Andrew T. McDonald and John R. Horner in 2010, and the type species is ''Rubeosaurus ovatus''. Formerly this species was assigned to ''Styracosaurus''. It is found as the sister taxon to ''Einiosaurus''. It is notable for its large broad–based nasal horn and the ornamentation of its bony frill: there were one or two pairs of straight spikes on the edge, with the two spikes closest to the midline pointing so that they converged.〔 Immature specimens referred to a separate genus, called ''Brachyceratops'', may be juvenile ''Rubeosaurus''.〔 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「Rubeosaurus」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.