Bargain 6.8" Priscacara Serrata - Green River Formation

This is a bargain specimen of Priscacara serrata from the Green River Formation of Wyoming. It's 6.8" long and remarkably detailed. It was collected from Warfield's Quarry near Kemmerer Wyoming this past summer. There are several repaired cracks running through the rock and the very tip of the tail was missing, hence the bargain price. Had these cracks not been there this would be a $500+ specimen given the otherwise great preservation. The piece has been backed with hardie board for stability and comes with a display stand.

Priscacara is an extinct genus of perch from the Eocene (55.8-33.8 mya) Fossils of these fish are commonly found in the Green River Formation in Wyoming. Priscacara probably darted about freshwater streams and lakes, snatching at small creatures like snails, crabs, prawns, and tadpoles.

They varied in size; for example, P. liops is a smaller species, never exceeding 150 mm, whereas the larger P. serrata has been found up to 375 mm. Priscacara means, “Primitive head”. These tough looking, ray-finned fish packed a punch if something dared to swallow it. The genus is known for its protective dorsal and anal spines.

50 million years ago, Priscacara thrived in lakes fed by Uinta and Rocky Mtn. highlands. This plucky genus of perch, possibly related to modern-day Cichlids, is now entombed in the fine-grained, lime mud of Fossil Lake. Priscacara eventually went extinct by the end of cooler and drier Miocene (23-5.2 mya).

Today the wonderfully-preserved fossils of Priscacara and other Fossil Lake fauna are collected in several private quarries around Kemmerer, Wyoming. The best preserved fish fossils come from the coveted 18 inch layer. This layer is collected at night under high-powered lights allowing the faint signs of fish under the surface to be more easily observed. These “ghosted” fish then must go through many hours of manual preparation to remove the overlying rock and reveal the Green River fauna in all of its glory.
DETAILS
SPECIES
Priscacara serrata
LOCATION
Warfield's Quarry, Kemmerer, Wyoming
FORMATION
Green River Formation
SIZE
6.8" long on 11x7" matrix
CATEGORY
ITEM
#33202
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.