Fossil Bass Fish

THE SCIENCE

This exquisite fossil of Cockerellites liops—commonly known as the Fossil Bass Fish—offers a rare glimpse into the thriving aquatic ecosystems of the Eocene Epoch. Belonging to the sunfish family, this species once navigated the subtropical freshwater lakes of what is now the Rocky Mountain region. Known for its deep body and powerful fins, Cockerellites was likely an agile swimmer and opportunistic predator, preying on smaller fish and invertebrates.

Preserved in the fine-grained limestone of the Green River Formation, this specimen stands as a testament to the region's unmatched fossil record. Rapid burial under volcanic ash and anoxic lake conditions led to the extraordinary detail visible in the bones and fins of this ancient fish.

THE STORY

The Cockerellites liops is one of the more elusive finds in the Green River Formation, making this fossil particularly noteworthy. Its fine preservation captures the robust, bass-like profile with remarkable clarity—highlighting the evolutionary threads that connect it to today’s sunfish species.

Whether admired for its scientific value or natural beauty, this fossil embodies the prehistoric artistry laid down over millions of years.

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DETAILS

SKU: FS-SL0007
Dimensions: Matrix: ~4.5"L x 3"W x 0.5"H
Specimen: 3.5-4.5"
Scientific Name: Cockerellites liops
Origin: Green River Formation, Wyoming, USA
Period: Eocene Epoch
Age: 50 Million Years Old
Shipping Restrictions: None.