fossil

Fossil tooth, likely mosasaur or large marine reptile tooth

Fossilized reptilian tooth; exact taxon requires diagnostic views and locality

AI-generated identification · may be incorrect

Dark gray-brown mineralized enamel and dentine with a tapered, conical form; hardness commonly about 5–7 Mohs, dull to slight luster, and no cleavage. The visible longitudinal ridges and tooth-like profile support a fossil tooth identification.

Identified September 21, 2026More fossil →

Explore Fossil tooth, likely mosasaur or large marine reptile tooth in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Fossil tooth, likely mosasaur or large marine reptile tooth
Scientific name: Fossilized reptilian tooth; exact taxon requires diagnostic views and locality
Category: fossil
Identified: September 21, 2026
Method: Standard

AI Estimated Value

About $10–$75 for a common isolated tooth; $100–$500+ for large, well-preserved, confidently identified specimens with provenance.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Originally formed as biological apatite and later mineralized during burial, commonly in marine Cretaceous sediments roughly 145–66 million years ago. Exact age and species depend on provenance.

Uses & applications

Primarily a display and educational specimen; polished or mounted examples are collected, while scientifically important specimens may be studied in paleontology.

Geological facts

Mosasaur teeth are often robust, conical, and ridged, but isolated teeth can resemble those of crocodilians or other marine reptiles. Surface texture and root morphology are important for confident identification.

Field identification & locations

Look for enamel ridges, a distinct crown-to-root transition, and mineral-filled cracks; compare the shape with documented fossils from the stated locality. Common sources include Morocco, the United States, and other Cretaceous marine deposits.