Fossil Alder Leaf From Copper Basin, Nevada

Upper Eocene Dead Horse Tuff

A complete fossil leaf from the upper Eocene Dead Horse Tuff, Copper Basin, Nevada--from a genus-species of alder paleobotanists refer to as Alnus jarbidgiana. The leaf is 38 to 39 million years old. Photograph courtesy an individual who goes by the cyber-name of tenebboy.

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