Fossil Fish Value Guide

This fossil fish is a remarkable specimen from the Eocene era, dating back 56 to 34 million years. Originating from the United States, these fossils are highly collectible due to the exceptional preservation found within the Green River Formation's unique limestone layers.

What affects the value of Fossil Fish?

• Completeness of the skeleton, including the presence of all fins and a clear skull structure.
• The size of the fish and the dimensions of the limestone slab it is embedded in.
• The level of natural detail and lack of excessive restoration or artificial painting.
• The species rarity, though common Diplomystus or Knightia specimens fall in the $150-$250 range.

How to Identify Fossil Fish?

• Look for the characteristic light-colored, fine-grained limestone matrix typical of the Green River Formation.
• Examine the skeletal structure for fine details like delicate fin rays and individual vertebrae.
• Check for a natural contrast between the dark fossilized organic material and the lighter surrounding stone.
• Verify that the fish is flush with the stone surface rather than being a glued-on resin cast.

History of Fossil Fish

This fossil is likely from the Green River Formation, renowned for its exceptionally preserved Eocene-era fish fossils. These fossils offer a remarkable window into ancient aquatic ecosystems.