A giant sauropod dinosaur from an Upper Cretaceous mangrove deposit in Egypt

We describe a giant titanosaurid sauropod dinosaur discovered in coastal de posits in the Upper Cretaceous Bahariya Formation of Egypt, a unit that has produced three Tyrannosaurus-sized theropods and numerous other vertebrate taxa, Paralititan stromeri is the first tetrapod reported from Bahariya si nce 1935. Its 1.69-meter-long humerus is Longer than that of any known Cret aceous sauropod. The autochthonous scavenged skeleton was preserved in mang rove deposits, raising the possibility that titanosaurids and their predato rs habitually entered such environments.