fossil
Fossil Shark Tooth
Lamniformes (order) - likely Cretalamna or Carcharias species
Hardness: 5 (Mohs scale), Color: Brown to black (depending on mineral replacement), Luster: Vitreous/shiny, Structure: Triangular blade with a distinct root area, Cleavage: None
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Physical properties
Hardness: 5 (Mohs scale), Color: Brown to black (depending on mineral replacement), Luster: Vitreous/shiny, Structure: Triangular blade with a distinct root area, Cleavage: None
Formation & geological history
Formed through permineralization where the organic calcium phosphate of the tooth is replaced by minerals like sedimentary phosphate or silica. These typically date from the Cretaceous to Neogene periods.
Uses & applications
Primarily for educational collecting, decorative displays, and jewelry (pendants).
Geological facts
Sharks can shed thousands of teeth throughout their lifetime, which is why teeth are the most common shark fossils found today.
Field identification & locations
Identify in the field by their distinct triangular shape and glossy enamel compared to surrounding rocks. Commonly found in coastal sedimentary deposits or riverbeds in regions like Morocco, Florida, and the Carolinas.
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