20.2" Notogoneus Fossil Fish With Priscacara - Wall Mount

This is a huge 20.2" long specimen of one of the rarer fish in the Green River Formation, Notogoneus osculus. It was collected from the famous 18" layer, which produces much darker and more detailed fish fossils. This impressive specimen is centered on a 28.5x15" slab of rock with a small Cockerellites liops naturally associated with it. The plate has been backed by wood for stability and has mounting hardware installed so that it can be easily hung on a wall.

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Notogoneus was a predator and the down-turned mouth is probably an indicator that it fed on prey at the lakes bottom. It is thought that it's scarcity results from the fact that it is felt it migrated between the lake and the rivers that fed it throughout the year to feed.

The lake itself is known as "Fossil Lake" and it existed 50 million years ago in what is now Wyoming and is believed to have covered approximately 930 square miles. It had an unusual chemistry that inhibited the decay and scavenging of dead organisms while think layers of limestone and organic matter accumulated. This special set of circumstances has lead to the beautiful preservation of fish and other fossils within the Green River Formation.