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Some Prehistoric Trees of the United States

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The prehistoric forests of the United States once included species of Ginkgo, Pseudolarix, Keteleeria, Glyptostrobus, Callitris, Eucommia, Zelkova, Pterocarya, Cercidiphyllum, Dipteronia, Koelreuteria, Cedrela, Ailanthus, Paliurus, and other genera, whose only survivors are now native to other parts of the world, particularly eastern Asia. This distribution of the fossil and living species suggests former land-bridge connections as well as adaptation to other geologic changes and accompanying climatic factors during the Cenozoic era.

Document Type: Journal Article

Affiliations: Geologist, U. S. Geological Survey, Washington, D. C.

Publication date: December 1, 1943

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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