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| | Washington State Gem (Site not responding. Last check: 2007-09-07) |
 | | Most of the petrified wood in Washington grew during the Miocene Epoch, some 5 -12 million years ago, when the state was swampy and mild, and played host to vast forests of cypress, oak, elm, and ginkgo trees. |
 | | A notable exception is studies conducted by professor George Beck of Washington State College in the 1950s, who noted the occurrence of oak, beech, and elm, among others. |
 | | Although petrified wood occurs in the western portion of the state, it is rarer than in the east. |
| www.statefossils.com /wa/wagem.html (399 words) |
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