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The Fossil Journal

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How to Identify a Real Megalodon Tooth

A genuine Otodus megalodon tooth is a fossil between roughly 3.6 and 23 million years old: stone-heavy, finely serrated on both edges, with a dark chevron-shaped bourrelet and a porous, bilobed root. A resin cast can be poured by the dozen. This guide covers the anatomy of a real tooth, the marks of authenticity, the red flags of a fake, the honest difference between a fake and a restored tooth, safe at-home checks, and why provenance and a COA matter.

Jun 29, 2026

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How to Grade and Value Fossil Shark Teeth

A fossil shark tooth's value rarely comes down to size alone. This curator's guide covers the factors that actually drive grade and value: slant height measured correctly, completeness, enamel quality and color, serrations, tip and root condition, percent restoration, pathology, and locality. It explains a practical gift / collector / investment framing, why bigger isn't automatically better, why a disclosed repair is fine but a hidden one isn't, and how to read a listing and a COA.

Jun 29, 2026