Microraptor was a dinosaur, in many ways related to birds. It was unable to fly, but it could glide from treetops. The Microraptor is an exclusive download on some sites, but is said to appear in Cretaceous Calamity, a pack made by Mysterious Map Marvels, along with other unpronounced creatures like Corythosaurus and Nigersaurus. It was originally planned to appear in Zoo Tycoon 2: Extinct Animals, but was cut for the final product.