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Green River Formation
Lincoln County, Wyoming

About 50 million years ago this fish swam in a fresh water lake located in Southwestern Wyoming. When the fish died it sank to the bottom of the lake where it was quickly buried. The soft sediments encased the fish and, over time as the rock hardened, the skeleton was preserved. This specimen was recently excavated from the hillside and additional careful work has resulted in capturing a piece of Wyoming's geological past. 

Label included


Plate: 6.88 x 5 x .5 inches

Specimen: 4.75 x 1.75 inches

Weight: ~ 1 lb.