“The ages obtained demonstrate that the latest ages of megafauna appearance in Brazil are associated with the middle and late Holocene,” the authors write. If these animals were alive in ...

Carbon-dating teeth suggests two large mammal species roamed northeastern Brazil 3,500 years ago Geologist Fábio Faria and colleagues carbon-dated eight fragments of megafauna teeth of different ...

They were the ancient Australian megafauna—huge animals that roamed ... scientists have found the fossils of a giant snake; a huge flightless bird; a wombat-like creature the size of a ...