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

Shark Tooth Fossil

Chondrichthyes tooth

AI-generated identification · may be incorrect

Mohs hardness around 5; dark grey to black coloration; vitreous to dull luster; composed primarily of fluorapatite and dentin.

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Physical properties

Mohs hardness around 5; dark grey to black coloration; vitreous to dull luster; composed primarily of fluorapatite and dentin.

Formation & geological history

Formed through the process of permineralization where skeletal material is replaced by minerals over millions of years, typically dating from the Cretaceous to Neogene periods.

Uses & applications

Collected by fossil enthusiasts and used in educational displays and jewelry.

Geological facts

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

Field identification & locations

Identified by the triangular blade, distinctive root structure, and lack of branching; commonly found in marine sedimentary deposits, river gravels, and coastal exposures.

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