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

Shark Tooth Fossil

Chondrichthyes fossil

AI-generated identification · may be incorrect

Hardness varies around 5 on Mohs scale due to mineralization; color ranges from tan to black; vitreous to dull luster; distinct triangular or multicusp morphology with serrated edges.

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Physical properties

Hardness varies around 5 on Mohs scale due to mineralization; color ranges from tan to black; vitreous to dull luster; distinct triangular or multicusp morphology with serrated edges.

Formation & geological history

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

Uses & applications

Valuable for paleontological study, educational displays, and as a popular collectible or jewelry item.

Geological facts

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

Field identification & locations

Found in marine sedimentary rock layers and river gravel beds; identified by characteristic enamel sheen and distinct tooth shape.

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