This is a fairly-recent deer molar tooth (Odocoileus sp.) recovered from the Peace River in Florida's Bone Valley Formation (Hawthorn Group). This area is rich in Miocene, Pliocene, and Pleistocene deposits (approx. 11,000 to 23,000,000 years ago). This well-preserved tooth has some of the roots intact and shows very good dentition. It likely comes from a white tail or black tail deer which have inhabited this area for many centuries.
Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing the tooth shown. Your purchase will include an ID label.