This is a fossilized cetacean tooth. It is likely a porpoise although the exact species is unknown. It dates from Miocene or Pliocene period and was recovered from the Peace River in Florida (Bone Valley formation, Hawthorn group). It measures approx. 26mm in length.
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing the specimen shown. Your purchase will include a labeled gemjar for safe storage.