Large, 15.2" Mioplosus Fossil Fish - 18 Inch Layer


This is an very large, 15.2" long example of Mioplosus labracoides from the Green River Formation of Wyoming. Very nice detail including fins, scales and bone structure with good preparation work. This specimen comes from the famous 18 inch layer, known for it's dark preservation and extraordinary detail.

The rock has been backed with wood for stability and a wall hanger has been added to this piece is ready to be displayed on your wall.

Mioplosus is a genus of large extinct perciform fish that lived through the Eocene epoch. This genus is easily distinguished by an elongate fusiform body, double dorsal fins, and forked tail. Mioplosus was a solitary predator with large teeth: a few fossil specimens have been collected with other, smaller fish lodged in their throats. Most fossils of this genus are from the Tertiary-aged Green River Formation in Wyoming, though relatives of this genus are known to range throughout Asia and New Zealand. Mioplosus is also believed to be related to the modern pike-perch of the genus Sander (Stizostedion).
Mioplosus labracoides
Kemmerer, Wyoming
Green River Formation, 18 Inch Layer
15.2" long on 21x10" shale
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.