5.2" Fossil Fish (Cockerellites) - Green River Formation

This is an 5.2" long Cockerellites (Priscacara) liops from the 18 Inch Layer, Green River Formation of Wyoming. It is very well preserved and shows bones and fin rays. Under magnification overlapping scales can be seen. The dark mass above the fish's head is likely a fish coprolite (feces).

Comes with an acrylic stand.

It comes from the coveted 18 inch layer of the Green River Formation which produces darker and more detailed fish than the majority on the market. The rock from this layer is much harder and more durable. This layer is typically collected at night using low angle light to see the bump in the rock that the back bone creates. They then cut these fish out and take them to a lab where the fish which may be up to an inch under the surface of the rock are meticulously extracted under microscope with hand tools.

Cockerellites (Priscacara) liops
Kemmerer, Wyoming
Green River Formation - 18 Inch Layer
5.2" fish, 6.7 x 4.0" rock
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