SIA3571: Dinosaur Ridge - Brontosaur Bulge in 3D

Photographer:Calvin J. Hamilton
Copyright:© 2010 Calvin J. Hamilton
Date Added:2010/01/30
Location:Dinosaur Ridge, Morrison, Colorado

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The underside of this sandstone ledge contains downward bulges formed as a large animal (probably a brontosaur) walked on soft ground, pushing down and distorting the layers below. These tracks were made more than 150 million years ago.

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