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2.14 in Diplomystus Green River Fossil Fish - Wyoming

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2.14 in Diplomystus Green River Fossil Fish - Wyoming

Availability: Out of stock

Diplomystus dentatus (Cope, 1877)

Green River Formation - 50 Million years old
Kemmerer, Wyoming, USA

Diplomystus : 2.14 in.

Matrix : 4 x 4 in.
(1 inch = 2.54 cm)

A nice a well preserved Diplomystus fossil fish.

This specimen was collected by us in the Fall of 2016, and painstakingly prepared.

It is 100% as found and has no restoration, with our personal guarantee!



The Green River Formation in Wyoming is one of the most famous and important Eocene (50-45 million years old) sites in the world. It provides a glimpse of the daily life surrounding the great Fossil Lake. From the prolific fossil fish deposits, the Green River Formation is also famous for it's insect, mammal, and even plant fossils! The formation exposes itself from southern Wyoming and into Utah and Colorado and shows us how life was more temperate at that time, often 60-70 degrees Fahrenheit.