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Protecting the Fossils From the time of the first discovery in July, until Dr. Greg McDonald could return to do a full investigation several weeks later, wind, rain, and drying conditions caused the fossils to deteriorate. The formation in which these fossils lie is the White River Group. These claystones have been affected by the changing climates since the time they were uncovered by the erosional effects of wind and rain and of freezing and thawing. As the clay became
wet and dry, it expanded and contracted causing the fossils to become
extremely fractured and fragile. |
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