The Copper Basin Fossil Plant Locality, Nevada

Upper Eocene Dead Horse Tuff

Looking roughly northward from a fossil leaf locality in the upper Eocene Dead Horse Tuff. A paleobotany enthusiast searches for plant fossils. Here, near the middle of the thick, predominantly pyroclastic section, minor interbeds of fine-grained, tuffaceous lacustrine shales up to 165 feet thick yield an abundance of excellently preserved fossil plants 38 to 39 million years old.

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