fossil

Fossilized Shark Tooth

Lamniformes (order) fossil

AI-generated identification · may be incorrect

Hardness (Mohs scale): 5.0 (hydroxyapatite); Color: Tan, beige, or white (depending on sediment); Luster: Dull to sub-vitreous; Structure: Triangular shape with root and blade; Specific Gravity: ~3.0

Color: Tan, beige, or white (depending on sediment)
Luster: Dull to sub-vitreous

Identified July 18, 2026More fossil →

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Physical properties

Hardness (Mohs scale): 5.0 (hydroxyapatite); Color: Tan, beige, or white (depending on sediment); Luster: Dull to sub-vitreous; Structure: Triangular shape with root and blade; Specific Gravity: ~3.0

Formation & geological history

Formed through the process of permineralization where minerals like calcium phosphate or silica replace the organic structure of the tooth over millions of years, typically in marine sedimentary environments.

Uses & applications

Mainly used for educational purposes, scientific study, and private fossil collections.

Geological facts

Sharks can lose thousands of teeth in a lifetime. Because their skeletons are cartilage and don't fossilize well, teeth are often the only record we have of prehistoric shark species.

Field identification & locations

Identify by looking for a characteristic triangular or blade-like shape, a distinct 'root' section, and a smooth 'enamel' blade. Commonly found on beaches or in creek beds in regions with Cenozoic or Mesozoic marine deposits.