During the Combined Soviet-Mongolian Paleontological Expeditions in 1971, an isolated, incomplete sauropod skull and nearly complete mandible were unearthed at a fossil site in the Upper Cretaceous bluffs of the Barun Goyot Formation near Shar Tsav, Mongolia.

The dorsal processes of the maxillae and the premaxillae are missing, as are the jugals, lacrimals, prefrontal, and part of the frontals, so much of the skull anatomy is hypothetical, while the lower jaw is practically complete.

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.

[3] 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.