Several years ago I found this item on beach in the Fort Myers, FL area. I don't remember what beach if that matters, possibly Lover's Key. I thought it was just an oyster shell but kept it because it looked like an ear. That was before I started collecting fossils. Now I see fossils everywhere!! Do you think this might be part of a tympanic bone from a small cetacean? Or just a weird shell? I've never examined a tympanic bone in person, just seen pics. Thoughts?