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The most interesting single fossil tree, but at the same time the most difficult to determine in the Ginkgo Petrified Forest (Washington), is the tree after which this unusual petrified forest takes its name. The ginkgo is not only the world's oldest and most remarkable living tree, but it has long been regarded as holding the most striking fossil record of any living thing, plant or animal.
Beck, G. F. (1936). Wood Occurring in the Ginkgo and Associated Petrified Forest (No. 1-The Gingko). The Mineralogist, 4(12), 7-8.
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