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. D183 is a very nice upper jaw lateral tooth. Note -tooth on the right. Authenticity guaranteed.
D183 (Right) SIZE: 5/16"
Note - 16 new Sumatran Glyphis glyphis teeth added in January 2018. Link to Sumatran teeth.