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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 Eoalulavis ： ウィキペディア英語版 Eoalulavis ''Eoalulavis'' (from the Ancient Greek: ''Éōs'', "dawn"; ''alula'', "bastard wing"; ''avis'', "bird") is a monotypic genus of enantiornithine bird that lived during the Barremian, in the Lower Cretaceous around 125 million years ago. The only known species is ''Eoalulavis hoyasi''.〔 (1996): An Early Cretaceous bird from Spain and its implications for the evolution of avian flight. ''Nature'' 382(6590): 442-445. (HTML abstract)〕〔 (2002): "The birds from the lower Cretaceous of las hoyas (Province of Cuenca, Spain)", Mesozoic Birds: Above the Heads of the Dinosaurs.University of California Press, Berkeley, , pp. 209-229.〕 ==Discovery== Its remains came from the Konservat-Lagerstätte of Las Hoyas, Cuenca, Spain. The holotype (LH13500), housed in the collection of , consists on both slab and counterslab preserving mainly the thoracic region, part of the neck and both almost complete forelimbs of an adult specimen.〔 (1996): An Early Cretaceous bird from Spain and its implications for the evolution of avian flight. ''Nature'' 382(6590): 442-445. (HTML abstract)〕 It also preserves remains of the body, primary, secondary feathers and a bastard wing which have been covered by layers of limonite as a result of the fossilization process.〔 (1996): An Early Cretaceous bird from Spain and its implications for the evolution of avian flight. ''Nature'' 382(6590): 442-445. (HTML abstract)〕 The preservation is consistent with the taphonomic processes associated with obruption, stagnation and the action of microbial mats in the locality〔 (1997): "The mineralization of dinosaur soft tissue in the Lower Cretaceous of Las Hoyas, Spain", Journal of the Geological Society, vol. 154, no. 4, pp. 587-588.〕 that have yielded a wide variety of examples of soft-tissue preservation (e.g.: connective tissues in fishes and theropods〔 (1997): "The mineralization of dinosaur soft tissue in the Lower Cretaceous of Las Hoyas, Spain", Journal of the Geological Society, vol. 154, no. 4, pp. 587-588.〕 or insect wings〔 (2010): "A holistic approach to the palaeoecology of Las Hoyas Konservat-Lagerstätte (La Huérguina Formation, Lower Cretaceous, Iberian Ranges, Spain)", Journal of Iberian Geology, vol. 36, no. 2, pp. 297-326.〕). Most of the osteological features of the holotype became apparent only after its acid preparation and transference to a resin cast.〔 (2002): "The birds from the lower Cretaceous of las hoyas (Province of Cuenca, Spain)", Mesozoic Birds: Above the Heads of the Dinosaurs.University of California Press, Berkeley, , pp. 209-229.〕 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「Eoalulavis」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.