Karen Chin, University of Colorado at Boulder (IMAGE)

University of Colorado at Boulder

Karen Chin, University of Colorado at Boulder

Caption

CU-Boulder Associate Professor Karen Chin uses a stereomicroscope to analyze fossil burrows, likely made by worms, which have been discovered just inches above the K-T boundary sediment that has been linked to mass extinctions on Earth some 65.5 million years ago, including the demise of the large dinosaurs.

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University of Colorado

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