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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 Dead clade walking ： ウィキペディア英語版 Dead clade walking Dead clade walking also known as "survival without recovery"〔 refers to a clade (group) of organisms which survived a mass extinction but never recovered in numbers, becoming extinct a few million years after the mass extinction or failed to recover in numbers and diversity. ==Origin of phrase== The phrase "dead clade walking" was coined by David Jablonski as early as 2001 as a reference to ''Dead Man Walking'',〔Jablonski, D. (2002) (Survival without recovery after mass extinctions ). ''PNAS'' 99, 8139-8144〕 a film whose title is based on American prison slang for a condemned prisoner's last walk to the execution chamber. Jablonski recognized at least four patterns in the fossil record following mass extinctions: 1) Unbroken Continuity (large-scale patterns continuing with little disruption); 2) Continuity with Setbacks (patterns disturbed by extinction event but soon continue on previous trajectory); 3) Survival without recovery or "Dead clade walking" (a group dwindles to extinction or minor ecological niches); and 4) Unbridled Diversification (increase in diversity and species richness, such as the mammals following the end-Cretaceous extinction event).〔 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「Dead clade walking」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.