Paleontologists discovered matching dinosaur footprints from the Early Cretaceous period in Brazil and Cameroon, indicating that land-dwelling dinosaurs could move freely between South America and Africa before the continents split. The 260 footprints, found along ancient rivers and lakes, date back 120 million years to when the continents were part of the supercontinent Gondwana. This discovery highlights the narrow geological connection between northeastern Brazil and Cameroon, allowing animal migration across the landmass.