50 Million-Year-Old Fossil Cricket from a Green River Formation Fossil Site in Colorado (IMAGE)

National Evolutionary Synthesis Center (NESCent)

50 Million-Year-Old Fossil Cricket from a Green River Formation Fossil Site in Colorado

Caption

Fine-grained lake sediment covered and buried the animals that lived in the Green River Formation, preserving them in exquisite detail.

Credit

Specimen number 45545 from the University of Colorado Museum; Photo courtesy of Dena Smith.

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