mineral

Mosasaur Tooth Fossil

Mosasaurid vertebrate fossil (Hydroxyapatite)

Hardness: 5 (Mohs), Color: Orange-brown with beige root, Luster: Vitreous to dull, Structure: Conical with slight curvature and fluting, Specific Gravity: ~3.0

Identified April 12, 2026More mineral →

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Physical properties

Hardness: 5 (Mohs), Color: Orange-brown with beige root, Luster: Vitreous to dull, Structure: Conical with slight curvature and fluting, Specific Gravity: ~3.0

Formation & geological history

Formed through permineralization where minerals replaced organic matter in marine environments. These fossils primarily date to the Late Cretaceous period (approx. 66-100 million years ago).

Uses & applications

Paleontological study, education, and highly popular as display specimens for fossil collectors.

Geological facts

Mosasaurs were apex marine predators, not dinosaurs. They could reach lengths of 50 feet and had an extra row of teeth on the roof of their mouths to hold onto slippery prey.

Field identification & locations

Identify by its conical, nonserrated shape and a distinct 'root' bulb at the base. Commonly found in the phosphate mines of Morocco (Oulad Abdoun Basin).

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