The Oligocene Bridge Creek Flora of the John Day Formation, Oregon (University of California Publica pdf epub mobi txt 電子書 下載2025
出版者:University of California Press
作者:Herbert W. Meyer
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頁數:364
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出版時間:1998-02-02
價格:USD 50.00
裝幀:Paperback
isbn號碼:9780520098169
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This comprehensive systematic revision of the Bridge Creek flora is based on large collections of megafossil specimens from the John Day and Crooked River basins. The flora was found to be more diverse than previously recognized, with at least 125 species. At least 11 genera are extinct, but the majority are extant members of deciduous forests. The flora was derived from a variety of sources and represents a classic example of the broadleaved deciduous forests that became widespread at mid-latitudes following the Eocene-Oligocene climatic cooling.
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