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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 Mesozygiella dunlopi ： ウィキペディア英語版 Mesozygiella dunlopi ''Mesozygiella dunlopi'' is an extinct species of orb-weaving spider, dating from the Early Cretaceous, making it the earliest orb-weaver yet discovered. Two male specimens of the species were found embedded in amber in Álava, northern Spain. The fossils provide direct evidence that the three major orb weaving families, namely Araneidae, Tetragnathidae and Uloboridae, had evolved by this time, about 140 million years ago. They probably originated during the Jurassic (200-140 million years ago). All three families very likely have a common origin.〔Penney & Ortuño 2006〕 The found males have a bodylength of two to almost three millimeters and eight eyes. The fossils are highly similar to recent ''Zygiella'' species, apart from the embolus originating medially rather than distally.〔 ==Name== The genus name is a combination of ''meso'', with the fossil stemming from the Mesozoic era, and the recent araneid genus ''Zygiella'', to which the fossil is closely related. The species is named in honor of paleoarachnologist Jason A. Dunlop.〔 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「Mesozygiella dunlopi」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.