LiveScience.com - North America's oldest conifer tree and some ancient scorpion parts are among the fossil treasures found in a newly discovered cave in Illinois. The new discovery also unearthed fossils of plants that may be new to science and revealed evidence of prehistoric forest fires. Scientists date the specimens to nearly 315 million years ago, according to initial findings presented last month at the regional meeting of the Geological Society of America in Lawrence, Kan. ...
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