Huge 10" Priscacara - Exceptional Specimen

 
 
This is a gigantic specimen of Priscacara serrata from the Green River Formation at 10 inches in length. It is nicely preserved from the the 18 inch layer and has no restoration or staining. It's centered on a 15 1/2 by 12 inch slab of matrix which has been backed by wood for stability, and is ready for mounting on a wall. It's very rare to see priscis this size and this is an excellent example that makes for an impressive wall display.

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
10" long on 15.5x12" matrix
CATEGORY
ITEM
#7222
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