VIDEO AT LINK................... Jan. 24 (UPI) -- A Maryland 9-year-old searching for shark teeth on a beach made her largest discovery to date -- a 15 million-year-old megalodon tooth. Molly Sampson was out searching for shark teeth on Calvert County Cliffs on Christmas Day when she found a megalodon tooth the size of her hand. "I couldn't believe it, it was so exciting," Sampson told WJLA-TV. "I usually find little ones, I never thought I would find a big one like that." Sampson took her discovery to the Calvert Marine Museum in Solomon's Island, where experts confirmed it was an...