
sedimentary
Coprolite
Coprolite
AI-generated identification · may be incorrectHardness: 3.5-5.5 (Mohs scale), Color: Brown, gray, or tan depending on mineral replacement, Luster: Dull to sub-vitreous, Structure: Cylindrical or amorphous trace fossil; may contain inclusions like bone bits.
- Hardness
- 3
Identified More sedimentary →
Explore Coprolite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3.5-5.5 (Mohs scale), Color: Brown, gray, or tan depending on mineral replacement, Luster: Dull to sub-vitreous, Structure: Cylindrical or amorphous trace fossil; may contain inclusions like bone bits.
Formation & geological history
Fossilized animal feces formed through mineralization (permineralization), primarily during the Mesozoic Era (250-66 million years ago) in sedimentary basins.
Uses & applications
Scientific research (paleontology), educational displays, fossil collecting, and occasionally used as a conversation piece in jewelry.
Geological facts
Coprolites provide invaluable information about the diet and physiology of extinct organisms. The largest coprolite ever found is over 60 cm long and is attributed to a T-Rex.
Field identification & locations
Identify by its 'fecal' shape (often cylindrical or twisted), presence of spiral patterns or inclusions, and its weight due to mineral replacement; commonly found in fossil-rich formations like the Hell Creek Formation.
More like this
Other sedimentary specimens
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary