Gray Fossil Site

The Gray Fossil Site located in Washington County, Tennessee was not a planned project.

According to, the fossil site was found during construction of State Route 75. Larry Bolt, a transportation geologist working on the construction of this route, first noticed unusual geology in the excavations.

Bolt took samples from the site to the Tennessee Geological Survey’s Knoxville office, resulting in a halt on the construction.

According to www., scientist predict the site was created by an underground limestone cave that collapsed resulting in a sinkhole.

Due to the collapse of the limestone cave, this left an ample fossil deposit that dates back to four and a half to seven million years ago.

So far the types of animals that have been discovered so far include short-faced bear, tapir, saber tooth cat, rhinoceros and hundreds of other plant and animal species.


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