Matching dinosaur footprints found in Africa and South America
Tens of millions of years ago, South America and Africa were part of the same landmass, an ancient supercontinent called Gondwana. At some point, the two continents began to drift apart until only a thin strip of land remained above, holding them together. A team of scientists in a new study argues that matching dinosaur tracks found in what are now Brazil and Cameroon were left along this narrow passage 120 million years ago, before the continents split apart.
New archaeological discoveries have shown that humans are capable of surviving in the most extreme conditions
The fossilized bones of a giant, extinct armored mammal provide the latest clue about when humans arrived in South America. At the time, in the late Pleistocene, numerous large animals inhabited the harsh, cold landscape, including giant sloths, mastodons, and saber-toothed cats. Humans were well-adapted to drought and resource scarcity, able to move along dry riverbeds in search of pools and the prey that grazed around them. The authors call this a “blue highway” that operated during the harshest periods.