The Oligocene Bridge Creek Flora of the John Day Formation, Oregon (University of California Publica pdf epub mobi txt 电子书下载 2024

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Herbert W. Meyer

University of California Press

1998-02-02

364

USD 50.00

Paperback

9780520098169

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发表于2024-11-24

The Oligocene Bridge Creek Flora of the John Day Formation, Oregon (University of California Publica epub 下载 mobi 下载 pdf 下载 txt 电子书下载 2024

The Oligocene Bridge Creek Flora of the John Day Formation, Oregon (University of California Publica pdf epub mobi txt 电子书下载 2024

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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.

The Oligocene Bridge Creek Flora of the John Day Formation, Oregon (University of California Publica 下载 mobi epub pdf txt 电子书