Fossilized Knightia Eocaena From the Green River Formation With Coa and Stand

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This fossil specimen represents Knightia eocaena, an extinct freshwater fish from the Eocene Epoch, approximately 50 million years old. Knightia … Read more This fossil specimen represents Knightia eocaena, an extinct freshwater fish from the Eocene Epoch, approximately 50 million years old. Knightia lived in vast prehistoric lake systems that once covered parts of present-day Wyoming, Utah, and Colorado and is the most abundant fossil fish species found in the renowned Green River Formation.
The fish is preserved in fine-grained limestone, revealing clear skeletal structure, delicate fins, and body outline. As a member of the herring family (Clupeidae), Knightia eocaena played an important role in ancient lake ecosystems, serving as a key food source for larger predatory fish and birds.
Highly valued for both educational and display purposes, Knightia eocaena fossils provide a remarkable glimpse into prehistoric freshwater life and remain among the most iconic fossils from the Green River Formation.
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