Name: Quaesitosaurus ‭(‬Extraordinary lizard‭)‬.
Phonetic: Kway-sit-oh-sore-us.
Named By: Kurzanov and Bannikov‭ ‬-‭ ‬1983.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Sauropoda,‭ ‬Titanosauroidea,‭ ‬Nemegtosauridae.
Species: Q.‭ ‬orientalis‭ (‬type‭)‬.
Diet: Herbivore.
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.‭

Further reading
- 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.


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