fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Hardness varies based on mineralization (typically Mohs 5-7), color ranges from dark brown, black, grey to tan, luster is vitreous to dull, structure is phosphatic/mineralized dentin and enameloid.

Identified August 5, 2026More fossil →

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Physical properties

Hardness varies based on mineralization (typically Mohs 5-7), color ranges from dark brown, black, grey to tan, luster is vitreous to dull, structure is phosphatic/mineralized dentin and enameloid.

Formation & geological history

Formed through the process of permineralization where shark teeth shed by ancient sharks are buried in sediment and minerals slowly replace the original organic material over millions of years (Cenozoic to Paleozoic eras).

Uses & applications

Used primarily in fossil collecting, education, jewelry, and decorative items.

Geological facts

Sharks lose thousands of teeth in their lifetime, making teeth the most common shark fossil found worldwide. Some large megalodon teeth can be centuries old and highly prized.

Field identification & locations

Found commonly in marine sedimentary deposits, riverbeds, and coastal beaches where ancient seas once existed. Look for the distinct triangular shape, smooth enamel, and sometimes a visible serrated edge.