Rock Identifier
Shark Tooth Fossil (Chondrichthyes dentition) — fossil
fossil

Shark Tooth Fossil

Chondrichthyes dentition

AI-generated identification · may be incorrect

Hardness varies by mineralization (Mohs 4-5); colors range from dark brown, black, to grey; vitreous to dull luster.

Identified More fossil →
Explore Shark Tooth Fossil in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App StoreGoogle Play

Physical properties

Hardness varies by mineralization (Mohs 4-5); colors range from dark brown, black, to grey; vitreous to dull luster.

Formation & geological history

Formed through permineralization where organic tooth material is replaced by minerals like silica or apatite over millions of years.

Uses & applications

Collected by enthusiasts, used in jewelry, and studied by paleontologists to understand ancient marine ecosystems.

Geological facts

Sharks lose thousands of teeth in a lifetime, making teeth the most common shark fossil found worldwide.

Field identification & locations

Identify by the distinct triangular shape, cutting edges with possible serrations, and dense enameloid coating. Found in riverbeds and coastal cliffs.

More like this

Other fossil specimens

Probable fossil-bearing rock or mineral concretion (Unidentified carbonate-rich concretion with a possible fossil inclusion) — fossil

Probable fossil-bearing rock or mineral concretion

Unidentified carbonate-rich concretion with a possible fossil inclusion

fossil
Likely fossil oyster shell (Fossilized bivalve shell; exact species cannot be identified from the image) — fossil

Likely fossil oyster shell

Fossilized bivalve shell; exact species cannot be identified from the image

fossil
Crinoid Stem Fossil in Matrix (Phylum Echinodermata, Class Crinoidea) — fossil

Crinoid Stem Fossil in Matrix

Phylum Echinodermata, Class Crinoidea

fossil
Fossiliferous limestone (likely a crinoidal or shell-fragment limestone) (Bioclastic limestone, composed chiefly of calcite (CaCO₃)) — sedimentary

Fossiliferous limestone (likely a crinoidal or shell-fragment limestone)

Bioclastic limestone, composed chiefly of calcite (CaCO₃)

sedimentary
Porous limestone pebble (Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image) — sedimentary

Porous limestone pebble

Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image

sedimentary
Weathered fossil bone fragment (identification uncertain) (Fossilized bone; exact taxon and mineral composition cannot be determined from the image) — fossil

Weathered fossil bone fragment (identification uncertain)

Fossilized bone; exact taxon and mineral composition cannot be determined from the image

fossil