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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 Romer's gap ： ウィキペディア英語版 Romer's gap Romer's gap is an example of an apparent gap in the tetrapod fossil record used in the study of evolutionary biology. Such gaps represent periods from which excavators have not yet found relevant fossils. Romer's gap is named after paleontologist Alfred Romer, who first recognised it.〔By 1955 (perhaps even earlier), Romer states that few good fossils of tetrapods have been recovered from early Carboniferous deposits. See: Romer, Alfred Sherwood (presented: November 11, 1955 ; published: June 28, 1956) "The early evolution of land vertebrates," ''Proceedings of the American Philosophical Society'', 100 (3) : 151-167; see especially page 166. Available on-line at: (JSTOR ).〕 ==Age== Romer's gap ran from approximately 360 to 345 million years ago, corresponding to the first 15 million years of the Carboniferous, the early Mississippian (Tournaisian). The gap forms a discontinuity between the primitive forests and high diversity of fishes in the end Devonian and more modern aquatic and terrestrial assemblages of the early Carboniferous.〔 〕〔 〕 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「Romer's gap」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.