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Some Petrified Wood from the Specimen Ridge Area of Yellowstone National Park

Arthur F. Beyer
The American Midland Naturalist
Vol. 51, No. 2 (Apr., 1954), pp. 553-576
DOI: 10.2307/2422124
Stable URL: http://www.jstor.org/stable/2422124
Page Count: 24
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Some Petrified Wood from the Specimen Ridge Area of Yellowstone National Park
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Abstract

This investigation deals with a collection of petrified woods (Tertiary) from the Specimen Ridge area of the Yellowstone National Park, Wyoming. Seven species of gymnosperms and three species of angiosperms are described. The following are new: 1. Pinus pseudotsugoides Beyer, 2. Piceoxylon laricinoides Beyer, 3. Abies lapidea Beyer, 4. Thuja xantholitica Beyer, 5. Libocedrus decurrenoides Beyer, 6. Quercus rubida Beyer, 7. Fagus grandiporosa Beyer.

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