翻訳と辞書 Words near each other ・ Rhus glauca ・ Rhus integrifolia ・ Rhus kearneyi ・ Rhus laevigata ・ Rhus lancea ・ Rhus lanceolata ・ Rhus leptodictya ・ Rhus longipes ・ Rhus malloryi ・ Rhus michauxii ・ Rhus microphylla ・ Rhus ovata ・ Rhus pendulina ・ Rhus pentaphylla ・ Rhus pentheri ・ Rhus rooseae ・ Rhus sandwicensis ・ Rhus sekhukhuniensis ・ Rhus sp. nov. A ・ Rhus taitensis ・ Rhus thyrsiflora ・ Rhus tomentosa ・ Rhus trilobata ・ Rhus typhina ・ Rhus virens ・ Rhuys Peninsula ・ RHV ・ RHWL ・ Rhwlas Limestone ・ Rhwng Gwy a Hafren Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Rhus rooseae ： ウィキペディア英語版 Rhus rooseae ''Rhus rooseae'' is an extinct species of flowering plant in the sumac family, Anacardiaceae, solely known from the middle Eocene sediments exposed in north central Oregon.〔 The species was first described from a series of isolated fossil seeds in chert.〔 ==History and classification== ''Rhus rooseae'' has been identified from a single location in the Clarno Formation, the Clarno nut beds, type locality for both the formation and the species. The nut beds are approximately east of the unincorporated community of Clarno, Oregon, and currently considered to be middle Eocene in age, based on averaging zircon fission track radiometric dating which yielded an age of 43.6 and 43.7 ± 10 million years ago and Argon–argon dating radiometric dating which yielded a 36.38 ± 1.31 to 46.8 ± 3.36 mya date.〔 The average of the dates resulted in an age range of 45 to 43 mya. The beds are composed of silica and calcium carbonate cemented tuffaceous sandstones, siltstones, and conglomerates which preserve either a lake delta environment, or alternatively periodic floods and volcanic mudflows preserved with hot spring activity.〔 The species was described from a series of type specimens, the holotype specimen USNM 355036, which is currently preserved in the paleobotanical collections of the National Museum of Natural History in Washington, D.C. and nine paratype specimens which are in the University of Florida collections. The fossils were part of approximately 20,000 specimens collected from 1942 to 1989 by Thomas Bones, A. W. Hancock, R. A. Scott, Steven R. Manchester, and a number of high school students.〔 The ''Rhus rooseae'' specimens were studied by paleobotanist Steven R. Manchester of the University of Florida. He published his 1994 type description for ''R. rooseae'' in the Journal ''Palaeontographica Americana''.〔 The specific epithet ''rooseae'' was chosen in recognition of work done by Carrie L. Roose during the preparation of Clarno flora project.〔 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「Rhus rooseae」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.