Coprolite

Ornithomimus

[Sinuous Cylindrical Trace in Sandstone]

Cretaceous

Laramide Formation

COLORADO

Photographed by Michael P. Klimetz

Photographed by Michael P. Klimetz

Photographed by Michael P. Klimetz

Image Courtesy of Phys.org

Shark

[Conical/Cylindrical Mass Replaced by Phosphatic Limestone]

Miocene-Pliocene

Lee Creek Mine

Aurora

Beaufort County

NORTH CAROLINA

Photographed by Michael P. Klimetz

Photographed by Michael P. Klimetz

Photographed by Michael P. Klimetz

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