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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 Marrella ： ウィキペディア英語版 Marrella ''Marrella splendens'' is an arthropod known from the middle Cambrian Burgess Shale of British Columbia. It is the most common animal represented in the Burgess Shale. ==History== ''Marrella'' was the first fossil collected by Charles Doolittle Walcott from the Burgess Shale, in 1909.〔 Also .〕 Walcott described ''Marrella'' informally as a "lace crab" and described it more formally as an odd trilobite. It was later reassigned to the now defunct class Trilobitoidea in the ''Treatise on Invertebrate Paleontology''. In 1971, Whittington undertook a thorough redescription of the animal and, on the basis of its legs, gills and head appendages, concluded that it was neither a trilobite, nor a chelicerate, nor a crustacean. ''Marrella'' is one of several, unique, arthropod-like organisms that have been identified in this notable geological formation. Other examples are ''Opabinia'' and ''Yohoia''. The unusual and varied characteristics of these creatures were startling at the time of discovery. The fossils, when described, helped to demonstrate that the soft-bodied Burgess fauna was more complex and diverse than had previously been anticipated.〔 Also .〕 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「Marrella」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.