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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 mayri ： ウィキペディア英語版 Aphaenogaster mayri ''Aphaenogaster mayri'' is an extinct species of ant in formicid subfamily Myrmicinae known from a series of Late Eocene fossils found in North America. ''A. mayri'' was one of two ''Aphaenogaster'' species described in a 1930 paper by Frank M. Carpenter. ==History and classification== ''Aphaenogaster mayri'' is known from a series of fossil insects which are compression-impression fossils 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. mayri'' was described, the Florissant formation was considered to be Miocene in age, based on the flora and fauna preserved.〔 Successive research and fossil descriptions moved the age older 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 Eocene Priabonian stage. At the time of description the species was known from a series of forty-one type fossils and over two hundred good fossils were examined for the species description.〔 The holotype was deposited in the Museum of Comparative Zoology paleontology collections at Harvard University. Along with a number of other insect type specimens, the ''A. mayri'' 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 with his 1930 type description of the new species being published in the ''Bulletin of the Museum of Comparative Zoology''. The etymology for the specific epithet ''mayri'' was not given with the type description. ''A. mayri'' was one of two ''Aphaenogaster'' species which Carpenter described in the paper, the other species being ''Aphaenogaster donisthorpei'', both from the Florissant Formation.〔 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 mayri」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.