A rock that sat untouched in a Pennsylvania museum's fossil collection for years has rare full-body imprints of
three ancient amphibians. Researchers found the imprints in sandstone rock collected in eastern Pennsylvania decades ago and stored in a museum in Reading. The body impressions of the salamander-like creature are estimated to be 330 million years old, 100 million years before the first dinosaurs appeared. Details of the find were presented Tuesday in Denver at a meeting of the Geological Society of America.
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