Fossilized Coprolite Value Guide

Fossilized Coprolite, or petrified animal dung, is a unique trace fossil dating back 250-300 million years to the Permian period. These specimens are highly collectible because they act as biological time capsules, preserving direct evidence of prehistoric diets and ancient ecosystems.

What affects the value of Fossilized Coprolite?

• Presence of visible inclusions like undigested bones or scales significantly increases scientific and collector value.
• The quality of mineralization, specifically the presence of colorful siderite or well-preserved calcium phosphate structures.
• Size and structural integrity, with larger, unbroken specimens commanding the higher end of the $15-$25 price range.
• Distinctiveness of the shape, as more recognizable 'coprolitic' forms are more desirable for display purposes.

How to Identify Fossilized Coprolite?

• Look for a distinct bulbous or cylindrical shape often featuring spiral patterns or pinch marks characteristic of digestive tracts.
• Check for a heavy, mineralized feel due to the replacement of organic matter with calcium phosphate or siderite.
• Examine the surface for inclusions such as tiny fossilized scales, bone fragments, or plant matter visible under magnification.
• Verify the provenance to the United States and the Permian era to ensure the specimen matches known geological deposits.

History of Fossilized Coprolite

Coprolites provide crucial data for paleontologists about the diets and ecosystems of prehistoric animals. By studying the internal structure, scientists can identify scales, bones, and plant matter consumed millions of years ago, turning waste into a biological time capsule.