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Double Priscacara serrata | Green River Formation | Natural Specimen

Double Priscacara serrata | Green River Formation | Natural Specimen

by In Stone Fossils
$1,600.00 - $1,600.00
$1,600.00
$1,600.00 - $1,600.00
$1,600.00
Priscacara serrata 100% Natural
Eocene (51.98 Million Years Ago) 
Green River Formation, Wyoming, USA 
In Stone Fossils Private Quarry

 

Fish approx. size: 4.75" & 10"

Plate approx. size: 21" x 19.75"

 

**Due to the size of this specimen, it will be shipped in an internationally compliant wooden crate. The plate itself is backed with 3/4" plywood for durability and easy wall hanging, a french cleat hanging system is included as well.

Shipping costs will be calculated and billed after purchase. Please contact us if you need a specific shipping rate prior to purchase. You may opt in for in-store pickup to cut your shipping costs all together and pick up your specimen in person. You can pick up from our store location in Kemmerer, Wyoming, or we deliver to both the Denver Gem & Mineral show in the Fall and the Tucson Gem & Mineral show in the winter. For any questions, please don't hesitate to contact us directly.

 

Order Perciformes

Family Moronidae - C. liops, P. serrata, H. hypsacantha, and undescribed Priscacara & Hypsiprisca species

P. serrata is perhaps the most popular and sought after of the Green River Formation fish fossils. The Moronidae are a family of perciform fishes, commonly called the temperate basses. P. serrata is an uncommon find compared to Cockerellites liops, which are often confused without proper examination and preparation. P. serrata are typically larger than C. liops.

 

Priscacara serrata is a deep-bodied, laterally compressed fish exhibiting a sunfish-like profile. It typically reaches lengths of 6 to 16 inches (15 to 40 cm), though smaller and larger specimens occur. Its distinguishing features include:

  • A prominent dorsal fin with both spiny and soft-rayed sections

  • Notably serrated preopercle and opercle bones, which give the species its name (“serrata” meaning “serrated”)

  • Well-developed pectoral and pelvic fins

 

Priscacara serrata fossils are often preserved in exceptional detail, with visible fin rays, scales, and skeletal structure. These specimens are a hallmark of the lagerstätte preservation found in the Green River Formation. Entire schools of Priscacara have been found fossilized together, suggesting schooling behavior and providing insights into Eocene freshwater ecosystems.

 

This species thrived in the subtropical, stratified freshwater lakes of the Eocene, preying on smaller fish, crustaceans, and aquatic invertebrates. It shared its habitat with other iconic Green River fishes like Knightia, Diplomystus, and Mioplosus.

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