Fossil Flora of the John Day Basin, Oregon PDF Download
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Author: Frank Hall Knowlton
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Category :
Languages : en
Pages : 206
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Author: Frank Hall Knowlton
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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Author: Herbert William Meyer
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Category : Science
Languages : en
Pages : 376
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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.
Author:
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Category : Geology
Languages : en
Pages : 668
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Author:
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Category : Colorado Plateau
Languages : en
Pages : 570
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Geology of 198 square miles in the central part of the Okanogan Highlands, Washington.
Author: Francis Whittemore Cragin
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Category : Geology
Languages : en
Pages : 270
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Author: Geological Survey (U.S.)
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Category : Artesian wells
Languages : en
Pages : 628
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Author: Chester Wells Purington
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Category : Gold mines and mining
Languages : en
Pages : 1016
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Author: Geological Survey (U.S.)
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ISBN:
Category : Geology
Languages : en
Pages : 220
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Author: Thomas Nelson Dale
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Category : Geology
Languages : en
Pages : 1050
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Author: Henry Shaler Williams
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ISBN:
Category : Geographical positions
Languages : en
Pages : 178
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