This is a fossil dugong veterbra process (Metaxytherium Floridanum) that was recovered from the Peace River in the Bone Valley formation of Florida (Miocene Period, approx. 7-14 million years ago). This specimen is not 100% complete, but is still recognizable as a vertebra. This piece measures approx. 3 inches by 2 inches and is heavy.
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing the specimen shown.