Named By: Kurzanov and Bannikov - 1983.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropoda, Titanosauroidea, Nemegtosauridae.
Species: Q. orientalis (type).
Size: Uncertain due to incomplete fossil material.
Known locations: Mongolia - Barun Goyot Formation.
Time period: Santonian to Campanian of the Cretaceous.
Fossil representation: Partial skull.
Quaesitosaurus is only known from a partial skull of what appears to have been a diplodocid sauropod dinosaur, however it has also drawn similarity to Nemegtosaurus that is also from the same area and also only known from a skull. If true then Quaesitosaurus may also be connected Opisthocoelicaudia which is only known from a headless body, that has been credited with possibly representing the missing body of Nemegtosaurus.
- Nouviy sauropod ys uerchnego mela MNR [New sauropod from the Upper Cretaceous of Mongolia]. - Paleontologicheskii Zhurnal 1983(2):90-96. - S. M. Kurzanov & A. F. Bannikov - 1983.