Sixty-six million years ago, at the end of the Cretaceous, Madagascar had already been an island for about 20 million years. And just as today, the island would have boasted a unique assortment of organisms isolated from most of the outside world. Thanks to fossils preserved in the Maevarano Formation we know the region was home to Beelzebufo, the world’s largest known frog, the theropod Masiakasaurus with it’s strange, forward projecting teeth, the herbivorous crocodylomorph, Siamosuchus, and the 8-meter sauropod, Rapetosaurus.