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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 Kretzoiarctos beatrix ： ウィキペディア英語版 Kretzoiarctos beatrix ''Kretzoiarctos beatrix'' is an extinct bear from the European Miocene and an ancestor of the extant giant panda. == Description == ''Kretzoiarctos beatrix'' is the ancestral group of the Ailuropodinae subfamily according to fossil records from the middle Miocene of Spain.〔McLellan, Bruce, and David C. Reiner. "A Review of Bear Evolution." Bears: Their Biology and Management 9.1 (1994): 85-96.〕 Based on teeth structure, researchers have speculated that this species may have been a small herbivorous animal that ate very hard plants.〔Abella, J., P. Montoya, and J. Morales. "Paleodiversity of the Superfamily Ursoidea (Carnivora, Mammalia) in the Spanish Neogene, Related to Environmental Changes." Journal of Iberian Geology 40.1 (2014): p16.〕 The giant panda (''Ailuropoda melanoleuca'') has a special craniodental structure that serves as a durophagous feeding adaptation for bamboo, and a similar tooth structure was also found in ''K. beatrix''., indicating that this species may be the oldest relative of the giant panda and might have resembled it in appearance.〔 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「Kretzoiarctos beatrix」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.