Carbon-dating teeth suggests two large mammal species roamed ... Previous research has noted other megafauna fossils around 6,000 and 5,000 years old in the American continent and elsewhere ...

These specimens were found to be of giant sloths and camel-like animals. Researchers conducted carbon dating on these fossils ... The remains were fragments of teeth from different megafauna ...

Now researchers have found other megafauna specimens, including giant sloths and camel-like ... dated fragments of teeth from different megafauna species found at two fossil sites in Brazil ...

"Future paleontologist, Molly, was out searching for fossils on Christmas morning when, what to her wondering eyes appeared…but a huge Megalodon tooth!" the museum wrote on its Facebook page.