Fossil Plants from Cretaceous Laramie Formation - 11/26/2002

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Notice burrowing from small creatures moving downward and diagonally through the layers of sediment. (The dime is upside-down, the sediments are not.)
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Notice burrowing from small creatures moving downward and diagonally through the layers of sediment. (The dime is upside-down, the sediments are not.)