Excavations near an Egyptian oasis have unearthed the bones of an animal that probably could rank as the second-most-massive dinosaur known.
Fossils found nearby indicate that the four-legged behemoth roamed through shallow mangrove swamps similar to those found today along the western edge of Florida's Everglades.
The long-necked herbivore's humerus-the bone that connects the animal's shoulder to its front knee-was more than 51/2 feet long, says Joshua B. Smith, a paleontologist at the University of Pennsylvania in Philadelphia. The new dinosaur, dubbed Paralititan stromeri, may have measured up to 100 feet long and weighed as much as 80 tons. That would make it second in weight only to Argentinosaurus, also a long-necked, four-legged herbivore.