Okay, I posted this yesterday and I’m not sure if it was that it was too long winded, in the wrong spot, or both. So, I will attempt to boil it down.   There was a post on this topic in 2011 but I feel like there’s certainly more knowledge on this now.   1. What formations are megalodon teeth coming from? The plausible ones are the Parachucla (22ma), Marks Head (18ma), and Goose Creek Lime (3.5ma), all within the umbrella Hawthorn formation. The CofC Museum lists almost every