fossil

Shark Tooth Fossil

Carcharhiniformes or Lamniformes (order level fossil)

Hardness: 5 on Mohs scale (for fossilized enamel/dentin), Color: Tan to greyish-brown, Luster: Dull to vitreous, Structure: Organic crystalline matrix replaced by minerals

Identified August 4, 2026More fossil →

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Physical properties

Hardness: 5 on Mohs scale (for fossilized enamel/dentin), Color: Tan to greyish-brown, Luster: Dull to vitreous, Structure: Organic crystalline matrix replaced by minerals

Formation & geological history

Formed through the process of permineralization where minerals such as calcium phosphate, silica, or pyrite replace the original biological material of the shark tooth over millions of years, typically dating from the Miocene to Cretaceous periods.

Uses & applications

Collected as paleontological specimens, used in educational displays, and crafted into jewelry.

Geological facts

Sharks lose thousands of teeth in their lifetimes, making teeth the most common shark fossil found worldwide. The root often turns a different color depending on the minerals present in the sediment where it was buried.

Field identification & locations

Found frequently in riverbeds, coastal cliffs, and excavated fossil layers. Easily identifiable by its triangular, symmetrical shape, smooth or serrated cutting edges, and distinct root structure.

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