sedimentary (fossil)

Fossilized Sand Tiger Shark Tooth

Carcharias taurus / Striatolamia macrota (mineralized as Hydroxylapatite/Francolite)

Hardness: 5 (Mohs); Color: Tan, yellow-cream, or brown depending on mineral replacement; Luster: Vitreous to satiny; Structure: Elongate, curved crown with a distinct bifurcated (two-pronged) root; Specific Gravity: ~3.0

Hardness: 5 (Mohs)
Color: Tan, yellow-cream, or brown depending on mineral replacement
Luster: Vitreous to satiny

Identified March 9, 2026More sedimentary (fossil) →

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Physical properties

Formation & geological history

Formed through permineralization within marine sedimentary layers. These specimens typically range from the Eocene epoch (approx. 50 million years ago) to more recent periods, found in phosphate rich deposits or old sea beds.

Uses & applications

Primarily used for educational scientific collection, jewelry (pendants), and as hobbyist display pieces. Significant in paleoecological studies to track ancient shark migrations.

Geological facts

Sharks can lose up to 35,000 teeth in a lifetime. Unlike modern white teeth, these fossilized versions have had their porous organic matter replaced by minerals from the surrounding sediment over millions of years.

Field identification & locations

Identify by looking for the sharp, tapering central blade and the V-shaped root. Commonly found in coastal areas of Morocco, Florida, and the Carolinas. Collectors should check the 'burlette' area and the root for integrity.

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