AdvertisementMaryland girl finds ancient tooth from a 50-foot-long megalodon in the Chesapeake BayJanuary 12, 2023Kaitlyn RaddefacebookEmailPart of Molly Sampson's shark tooth collection – including the tooth of a megalodon from some 15 million years ago (left) – sits on display on Jan. 11. Her collection contains over 400 teeth. (Alicia Sampson)