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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 Aphaenogaster donisthorpei ： ウィキペディア英語版 Aphaenogaster donisthorpei ''Aphaenogaster donisthorpei'' is an extinct species of ant in formicid subfamily Myrmicinae known from a Late Eocene fossil from North America. ''A. donisthorpei'' was one of two ''Aphaenogaster'' species described in the 1930 paper. ==History and classification== ''Aphaenogaster donisthorpei'' is known from a solitary fossil insect which is a compression-impression fossil preserved in fine shales of the Florissant formation in Colorado.〔 The formation is composed of successive lake deposits which have preserved a diverse assemblage of insects. The insects and plants suggest a climate similar to modern Southeastern North America, with a number of taxa represented that are now found in the subtropics to tropics and confined to the old world. When ''A. donisthorpei'' was described, the Florissant formation was considered to be Miocene in age, based on the flora and fauna preserved.〔 Subsequent research and fossil descriptions re-examined the dating, and by 1985 the formation had been reassigned to an Oligocene age. Further refinement of the formation's age using radiometric dating of sanidine crystals has resulted in an age of 34 million years old. This places the formation in the Late Eocene Priabonian stage. At the time of description the holotype specimen, number 2917 was deposited in the Museum of Comparative Zoology paleontology collections at Harvard University. Along with a number of other insect type specimens, the ''A. donisthorpei'' holotype is part of the Samuel Hubbard Scudder insect collection donated to Harvard in 1902. The fossil was first studied by paleoentomologist Frank M. Carpenter of the Museum of Comparative Zoology; in 1930 his type description of the new species was published in the ''Bulletin of the Museum of Comparative Zoology''. The etymology for the specific epithet ''donisthorpei'' was not specified with the type description, but Horace Donisthorpe (1870–1951) was a British myrmecologist and coleopterist. ''A. donisthorpei'' was one of two ''Aphaenogaster'' species from the Florissant Formation that Carpenter described in the paper, the other species being ''Aphaenogaster mayri''.〔 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「Aphaenogaster donisthorpei」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.