forming joint grinding of the back main area). Furthermore, these authors wrote that the side of the Quaesitosaurus''' upper jaw had nine teeth, while it was only eight in Nemegtosaurus. The lower jaw's tooth row was also longer, so the authors stated. However, later studies recognized that some of the morphological differences were created by subsequent deformations of the skulls. The skull of Quaesitosaurus dorsoventrally (vertically) is compressed, while the skull of Nemegtosaurus is pressed at an angle. Others of the characteristics listed by Kurzanov and Bannikov, such as the shorter scale bone and the lower number of teeth, could not be confirmed or refuted by later studies due to poorly. Still other characteristics such as the occipital condylus are too minor to be able to be used as diagnostic characteristics and can also be attributed to individual variations. Wilson (2005) published an extensive new description of the Nemegtosaurus skull and found further characteristics (autapomorphies) that support the status of its own genus for Quaesitosaurus. For example, Quaesitosaurus shows, unlike Nemegtosaurus, pits in the front square, while a comb was not present on the rear post orbital. Classification When Quaesitosaurus was originally described, it was placed with the Jurassic African Dicraeosaurus in Dicraeosauridae because it was one of the few other sauropods with preserved skulls known. However, recent analysis has placed Quaesitosaurus along with Nemegtosaurus'' in the Nemegtosauridae. References Barun Goyot Formation Late Cretaceous dinosaurs of Asia Lithostrotians Fossil taxa described in 1983 Taxa named by Sergei Kurzanov