fossil
Shark Tooth Fossil
Elasmobranchii fossil (likely Carcharias or Odontaspis sp.)
Hardness: 5 (Mohs scale), Color: tan to brown (permineralized), Luster: vitreous to matte, Structure: sharp triangular blade with a distinct root area
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Physical properties
Hardness: 5 (Mohs scale), Color: tan to brown (permineralized), Luster: vitreous to matte, Structure: sharp triangular blade with a distinct root area
Formation & geological history
Formed through permineralization where minerals from sediment replace organic bone material over millions of years; common in marine deposits from the Cretaceous to Neogene periods.
Uses & applications
Educational collections, fossil hunting, and jewelry (beads or wire-wrapped pendants).
Geological facts
A single shark can produce and lose tens of thousands of teeth in its lifetime, which is why they are some of the most common fossils found worldwide.
Field identification & locations
Identified by the distinct sharp blade shape and serrations (if present). Commonly found on beaches or in riverbeds after heavy rains wash away surrounding sediment.
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