About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 31. Chapters: Abyssosaurus, Apatomerus, Aphrosaurus, Aptychodon, Aristonectes, Aristonectidae, Aristonectinae, Brachauchenius, Brancasaurus, Brimosaurus, Callawayasaurus, Cimoliasaurus, Cryptoclididae, Dolichorhynchops, Edgarosaurus, Elasmosauridae, Elasmosaurus, Eromangasaurus, Fresnosaurus, Futabasaurus, Hydralmosaurus, Hydrotherosaurus, Kaiwhekea, Kronosaurus, Leptocleididae, Leptocleidus, Leurospondylus, Libonectes, Luetkesaurus, Manemergus, Mauisaurus, Morenosaurus, Nichollssaura, Ogmodirus, Opallionectes, Plesiopleurodon, Polycotylidae, Polycotylus, Polyptychodon, Scanisaurus, Sinopliosaurus, Styxosaurus, Sulcusuchus, Terminonatator, Thalassomedon, Thililua, Trinacromerum, Tuarangisaurus, Umoonasaurus, Uronautes, Wapuskanectes, Woolungasaurus, Zarafasaura. Excerpt: Elasmosaurus (; from Greek ελασμος elasmos 'thin plate' (referring to thin plates in its pelvic girdle) + σαυρος sauros 'lizard') is a genus of plesiosaur with an extremely long neck that lived in the Late Cretaceous period (Campanian stage), 80.5 million years ago. RestorationElasmosaurus was about 14 m (46 ft) in length and weighed over 2,000 kg (2.2 short tons), making it among the largest plesiosaurs. It differs from all other plesiosaurs by having six teeth per premaxilla (the bones at the tip of the snout) and 71 neck (cervical) vertebrae. The skull was relatively flat, with a number of long pointed teeth. The lower jaws were joined at the tip to a point between the fourth and fifth teeth. The neck vertebrae immediately following the skull were long and low, and had longitudinal lateral crests. Like most elasmosaurids, Elasmosaurus had around three pectoral vertebrae. The tail included at least 18 vertebrae. The pectoral girdle featured a long bar, not present in juveniles. The scapula had margins of approximately equal length for the joint...
