Synthetoceras tricornatus poster Mammut Spinosaurus was a massive sail-backed

Spinosaurus was a massive sail-backed predator that spent much of its life in the water

Its highly specialized fur coat and fat storage would have allowed it to survive the harsh environment of the ice ages

Paleontologists have found that lagerpetids are the ancestors of pterosaurs

Koolasuchus was a giant brachyopoid temnospondyl from the Early Cretaceous of Australia

Synthetoceras tricornatus poster Mammut Spinosaurus was a massive sail-backedThe males of this extinct ungulate were armed with a distinctive Y shaped horns that grew above its snout. Such a strange forked structure could have helped them intimidate each other to settle territorial disputes.