Rock Identifier
Fossilized Shark Tooth (Chondrichthyes teeth) — fossil
fossil

Fossilized Shark Tooth

Chondrichthyes teeth

AI-generated identification · may be incorrect

Hardness of 4-5 on the Mohs scale for fossilized dentin, colors range from grey to black or brown, vitreous to dull luster, crystalline mineral replacement structure.

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

Identify your own rocks.

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

App StoreGoogle Play

Physical properties

Hardness of 4-5 on the Mohs scale for fossilized dentin, colors range from grey to black or brown, vitreous to dull luster, crystalline mineral replacement structure.

Formation & geological history

Formed through the process of permineralization where minerals replace original organic material in marine sedimentary deposits over millions of years.

Uses & applications

Valued by collectors, used in educational displays, and sometimes set in jewelry.

Geological facts

Shark teeth are shed continuously throughout a shark's life, making them one of the most common marine fossils found worldwide.

Field identification & locations

Identify by the characteristic triangular or cusped blade shape often found eroding out of coastal cliffs, riverbeds, and sedimentary rock formations.

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
Fossil oyster shell (Oyster (family Ostreidae); shell composed chiefly of calcite (CaCO₃)) — fossil

Fossil oyster shell

Oyster (family Ostreidae); shell composed chiefly of calcite (CaCO₃)

fossil