This is a large example of a fossilized Puffer Fish mouthplate (Chilomycterus) that was recovered from the Peace River in the famous Bone Valley formation in Florida. These plates date from the Pleistocene to the Miocene periods (approx. 11,000 to 23,000,000 years ago). The mouthplates are very dense and hard, and they are the only part of this fish that is known to fossilize.
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.