National Geographic When Continents Collide Film Complet Vf Gratuit

It may have been the most cataclysmic geologic event of the last 60 million years. The narrow, 400-mile-long Isthmus of Panama, once buried below the sea, rose up and connected North and South America. This new land bridge unleashed an astonishing animal encounter as prehistoric predators and prey each unique to their worlds came face to face for the first time. An armor-plated ancestor of the armadillo. A saber-toothed marsupial. A horselike creature with three-toed feet. Evolutionary history changed forever as animals from the continents clashed. Today, scientists are on a quest to discover what happened, how and why. Which creatures survived and which were vanquished? Learn about the migration of animals north and south and their transformed evolutionary trajectories. And examine the fossils to see which animals disappeared and which ones managed to move.

Some hundred million years ago, crocodiles were the ruling T. rexes of the waters. They galloped on land, ambushed prey at the river's edge - even terrorized dinosaurs. These swift predators evolved through the ages into the modern crocs we know today. Now, armed with newly discovered prehistoric crocodile bones, Dr. Paul Sereno is determined to bring the ancient creatures to life - and tell their fantastic untold story. Learn about a croc that pursued prey across land, a supercroc that locked its jaws around dinosaurs, even a croc with a startlingly canine face. Blending art, forensics and biology, a team reanimates a lost world of strange Cretaceous crocs that paleontology forgot.