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Ashfall Fossil Beds State Historical Park (Neb.)

View Resource Ashfall Fossil Beds State Historical Park

Approximately 12 million years ago, a massive volcano in the southwestern corner of Idaho erupted and spread a tremendous blanket of ash over a large area. Much of this ash settled over the grasslands of northeastern Nebraska. Animals consumed the ash-covered grasses, and eventually they began to perish as a result of consuming this abrasive powder. Eventually these animals and their skeletons...