The middle Miocene Pyramid flora of western Nevada
著者
書誌事項
The middle Miocene Pyramid flora of western Nevada
（University of California publications in geological sciences, v. 137）
University of California Press, c1992
- : pbk.
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注記
1 map in pocket
Includes bibliographical references and index
内容説明・目次
内容説明
The Pyramid flora (15.8 m. years) is wholly dominated by broadleaved deciduous hardwoods of eastern alliance that indicate ample summer rain. Deciduous hardwoods are largely absent from slightly younger nearby floras (less than 15.8 m. years) that are dominated by mixed conifer and broadleaved evergreen forest species. The change is attributed to reduced summer rain that reflects global climatic change influenced by spreading antarctic ice.
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