About Knightia Fish Fossil

Knightia is an extinct prehistoric freshwater fish and one of the most common fish species found in the fossil record. It is closely related to modern-day herrings and sardines.

During the Eocene epoch, a series of large lakes once covered parts of what is now Wyoming, Colorado, and Utah. Within the Green River Formation, fine-grained sediments settled at the bottom of these lakes, creating ideal conditions for fossil preservation. As a result, countless Knightia fossils have been discovered, often remarkably detailed, offering a glimpse into ancient aquatic ecosystems that thrived over 50 million years ago.

• Fossil type: Knightia
• Age: Eocene period, 45-60 million years old
• Origin: Green River Formation – Kemmerer, Wyoming, USA
• Size: 5 x 3.5 x 0.5 inches
• Weight: 246g