fossil

Shark Tooth Fossil

Chondrichthyes fossil

AI-generated identification · may be incorrect

Hardness varies by mineralization (Mohs 4-5); color ranges from tan, brown, to black; vitreous to dull luster; composed mainly of fluorapatite.

Identified November 14, 2026More fossil →

Explore Shark Tooth Fossil in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness varies by mineralization (Mohs 4-5); color ranges from tan, brown, to black; vitreous to dull luster; composed mainly of fluorapatite.

Formation & geological history

Formed through permineralization when buried in marine sediment over millions of years, often dating from the Cretaceous to Miocene epochs.

Uses & applications

Valuable for paleontological study, educational displays, and as prized items in fossil-collecting hobbies.

Geological facts

Shark teeth are shed in the thousands throughout a shark's lifetime, making them one of the most common vertebrate fossils found worldwide.

Field identification & locations

Identify by the characteristic triangular blade and root structure; commonly found in riverbeds, coastal exposures, and fossiliferous limestone formations.

Other fossil specimens

See all

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

Fossil

Invertebrate fossil / Trace fossil

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

Porous limestone pebble

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

sedimentary