fossil

Fossil Shark Tooth

Squalicorax (likely Squalicorax pristodontus or Squalicorax falcatus)

Hardness: 5 (Enamel), Color: Brownish-tan to orange, Luster: Vitreous, Structure: Flat triangular blade with serrated edges (though worn), composed of hydroxylapatite mineralized over time.

Identified July 6, 2026More fossil →

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Physical properties

Hardness: 5 (Enamel), Color: Brownish-tan to orange, Luster: Vitreous, Structure: Flat triangular blade with serrated edges (though worn), composed of hydroxylapatite mineralized over time.

Formation & geological history

Formed through permineralization of shark teeth in marine sediments. This specimen likely dates to the Late Cretaceous period (approx. 70-100 million years ago), common in the Western Interior Seaway or North African phosphate deposits.

Uses & applications

Used primarily for biological study, fossil collecting, and occasionally in jewelry (wire-wrapped pendants).

Geological facts

Squalicorax is known as the 'Crow Shark.' It was a scavenger and predator that grew up to 16 feet long. Their teeth are one of the most common fossils because sharks lose thousands of teeth throughout their lives.

Field identification & locations

Identified by its distinctive triangular shape and sharp edges. Commonly found in riverbeds, coastal beaches, and phosphate mines. Look for a sleek, glass-like texture compared to surrounding rocks.

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