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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 Denaeaspis ： ウィキペディア英語版 Denaeaspis ''Denaeaspis'' is an extinct genus of tortoise beetle in the family Chrysomelidae and containing a single species ''Denaeaspis chelonopsis''. The species is known only from the Middle Eocene Parachute Member, part of the Green River Formation, in the Piceance Creek Basin, Garfield County, northwestern Colorado, USA.〔 ==History and classification== ''Denaeaspis chelonopsis'' is known only from one fossil, the holotype, specimen number "USNM 58373". The specimen is composed of a complete specimen of unidentified sex which is preserved as a compression fossil in sedimentary rock. The fossil was recovered from outcrops of the Green River Formations Parachute Member at the Denson site, locality 42053, in Garfield County, Colorado, USA.〔 The type specimen is currently preserved in the Department of Paleobiology collections housed in the National Museum of Natural History, located in Washington, D.C., USA. ''Denaeaspis'' was first studied by Caroline S. Chaboo and Michael S. Engel of the University of Kansas, Lawrence, Kansas, USA. Their 2009 type description of the genus and species was published online and in print in the journal ''Systematic Entomology''.〔 The generic name was coined by Chaboo and Engel from a combination of the Greek ''denaios'' meaning "old" and the Greek word ''aspis'' meaning "shield". The etymology of the specific epithet ''chelonopsis'', from the Greek ''chelone'' for "tortoise" and ''opsis'' for "lookalike", is in reference to tortoise beetles, the common name of the group.〔 When described, ''Denaeaspis chelonopsis'' along with ''Eosacantha delocranioides'' were among the oldest derived tortoise beetles in the fossil record. The nearest modern relatives to ''Eosacantha'' in the tribe Imatidiini are restricted to South America and the Caribbean region. The loss of the tribe from North America may be related specialization of the beetles to specific plant hosts that were lost with due to the extensive climatic shifts during the Late Eocene - Early Oligocene transition.〔 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「Denaeaspis」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.