My Megalodon and Ancestor Collection as of 9/26/13 (Largest in back row is 6.6 inches and largest in second row is 6.2 inch Chilean Meg for reference).

I finally had a chance to take a picture of all the Megs and Meg ancestors in my collections as of 9/26/13. Largest tooth in the back row is 6.6 inches and largest tooth in the second row is a 6.2 inch Chilean, for reference. The more exotic locations are on the second/middle row starting on the left. From left to right on the 2nd row is a 6.2" Chilean, 6.0" Chilean, 5.2" Aurora, 5.1" Cuban, and then 4.6" Cuban. The rest are from the more typical locations (mostly Carolinas, Florida, and Georgia).