Middle Miocene

Round Mountain Silt, Sharktooth Hill Bonebed

Sharktooth Hill, Bakersfield, Kern County, CA, USA

8mm shark tooth

Shark

This shark species was once assigned to the mako genus, Isurus, but recent studies concluded that it is actually the direct ancestor of the great white shark and should be placed in the same genus.  Isurus and Carcharodon both belong to the Family Lamnidae.

This tooth is from towards the back of the jaw (posterior).