I found this bone on a Tampa Bay Beach, Florida and the next week I found an identical one but left it. When I first scooped it out of the water I thought it was a molar from a manatee. After looking at it I saw it didn't have a root and was it a joint bone? From the weight and color I think it's modern but curious to find out what I found and what animal. (ruler is in inches) Any help or ideas welcome and appreciated.