A very rare Glyphis glyphis tooth, the Speartooth shark, from Sumatra, Indonesia. These teeth were deposited in the Telisa formation - a shallow marine environment during the middle Miocene (approx. 15 million years ago.) A very unique collector's tooth. D186 is a very nice upper jaw anterior tooth. Note -tooth in the right. Authenticity guaranteed.
D186 (Right) SIZE: 1/4"
Note - 16 new Sumatran Glyphis glyphis teeth added in January 2018. Link to Sumatran teeth.