About the Book
Source: Wikia. Pages: 33. Chapters: Abydosaurus, Agathaumas, Albertosaurus, Amargasaurus, Balaur Bondoc, Bambiraptor, Baryonyx, Brachiosaurus, Carcharodontosaurus, Chasmosaurus, Concaventor, Conchoraptor, Deinonychus, Dracorex, Eocarcharia, Euoplocephalus, Gastonia, Gorgosaurus, Hypsilophodon, Incisivosaurus, Irritator, Koreaceratops, Maiasaura, Majungasaurus, Megalosaurus, Megaraptor, Microceratops, Microraptor, Minmi, Neovenator, Olorotitan, Oviraptor, Pachycephalosaurus, Paralititan, Parasaurolophus, Protoceratops, Pyroraptor, Saltasaurus, Segnosaurus, Shaochilong, Styracosaurus, Suchomimus, Tarbosaurus, Therizinosaurus, Torosaurus, Triceratops, Troodon, Tsintaosaurus, Tyrannotitan, Utahraptor, Velociraptor, Wintonotitan. Excerpt: It is of interest because it is one of the few sauropods known from skull material, with the first described complete skull for a Cretaceous sauropod from the Americas.It is also notable for its narrow teeth, as earlier brachiosaurids had broader teeth. Abydosaurus is based on DINO 16488, a nearly complete skull and lower jaws with the first four neck vertebrae. Abundant skull and postcranial bones were found at the same site, including partial skulls from three additional individuals, a partial hip and associated tail vertebrae, a shoulder blade, an upper arm bone, and hand bones. These fossils were found in a sandstone bed at the base of the Mussentuchit Member of the Cedar Mountain Formation, near the old visitor center of Dinosaur National Monument. Zircons in the sandstone and underlying mudstone indicate an age of 104.46 0.95 million years, in the Albian stage of the Early Cretaceous. Although Abydosaurus lived some 45 million years after Giraffatitan, the skulls of these two genera are similar except for the narrower, sharper teeth and smaller nose of Abydosaurus. Abydosaurus can be differentiated from all other sauropods, including Giraffatitan, by subtle features of the nasal and maxillary bones, its relatively small exter...
