sedimentary
Fossil Shark Tooth
Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth
AI-generated identification · may be incorrectHardness: 5 (Mohs scale), Color: Gray/Black blade with tan/white root, Luster: Vitreous to dull, Structure: Bio-mineralized hydroxyapatite replaced by minerals, Specific Gravity: 3.0-3.1
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Physical properties
Hardness: 5 (Mohs scale), Color: Gray/Black blade with tan/white root, Luster: Vitreous to dull, Structure: Bio-mineralized hydroxyapatite replaced by minerals, Specific Gravity: 3.0-3.1
Formation & geological history
Formed via permineralization where organic tooth material is replaced by minerals in marine sediments. Likely Eocene to Miocene in age (approx. 5 to 50 million years old).
Uses & applications
Predominantly for biological education, scientific research, hobbyist collecting, and decorative jewelry.
Geological facts
Sharks can lose tens of thousands of teeth in a lifetime. These fossils are often found far inland in places that were once ancient seabed environments.
Field identification & locations
Identify in the field by searching for triangular shapes with serrated or smooth edges in riverbeds or beaches; look for dark, glassy lusters distinct from surrounding gravel.
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