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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 Gnathabelodon ： ウィキペディア英語版 Gnathabelodon Gnathabelodon is an extinct proboscidean (elephant) genus endemic to North America that includes species that lived during the Middle to Late Miocene. They were called "Spoon-billed Mastodons" since their lower jaw was elongated and shaped like a shoe-horn or spoon. The genus ''Gnathabelodon'' consists of two species: Thorpe's Spoon-billed Mastodon (''G. thorpei'') and Buckner's Spoon-billed Mastodon (''G. buckneri''). The flaring of the tip of their lower jaw was similar to that of the "shovel-tuskers" (Platybelodon and Amebelodon) however ''Gnathabelodon'' species are distinct in having no lower tusks whilst the "shovel tuskers" have broad, flattened lower tusks. The upper tusks are large and curve outwards and upwards. In respects to dentition and overall body form, it was similar to other species of ''Gomphotherium''. ==References== 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「Gnathabelodon」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.