Fossil Fish, Diplomystus from Green River - 2.5 to 3.5 inches
Here is an excellent prehistoric fish fossil - Diplomystus sp. - which is related to modern day herrings.
This fish swam in ancient Eocene lakes in Wyoming, USA, 50 million years ago. It was discovered in the famous Green River Formation, known to produce some of the world's most spectacular fossils, including large gars and a variety of fish, other vertebrates like turtles, birds and lizards, and magnificent palms.
The distinctive upturned mouth on this species was used to feed on surface fish, such as Knightia. Interestingly, this predator has even been found with small fish preserved in its mouth.
This is one of our best selling fossils! We highly recommend it to start a fossil collection.
Representative item. Larger fossil fish can be chosen individually. See more fossil fish.
Details: The fish measures 2.5 to 3.5 inches. The slab of stone measures approximately 4.5 - 6 x 5 x 0.5 inches.