aegyptosaurus, meaning "egypt's lizard", is a genus of sauropod dinosaur that lived in africa around 95 million years ago during the upper cretaceous period. like most sauropods, it had a long neck and a small skull. the animal's long tail probably acted as a counterweight to its body mass. its tail also ended in a whip-like structure that it used to defend itself against predatory dinosaurs such as "carcharodontosaurus" and "spinosaurus".