Pliocene

Orange County, CA, USA

13mm complete tooth.

Shark, Lamnidae.

This is a fossil tooth of a baby great white shark.  You can tell this is a baby tooth not just because it still retains small lateral cusplets. It appears to be an upper anterior tooth.  An adult tooth of this position would be around/at least 25mm (approx. 1 inch).

This tooth comes from an oddball site in California – the area of the Orange County Fairgrounds in Costa Mesa.