Quaesitosaurus

Quaesitosaurus; Temporal range: Late Cretaceous,
	Diagram showing known elements of the holotype skull
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Sauropoda
Clade:	†Macronaria
Clade:	†Titanosauria
Family:	†Nemegtosauridae
Genus:	†Quaesitosaurus; Kurzanov & Bannikov, 1983
Species:	†Q. orientalis
Binomial name
	†Quaesitosaurus orientalis; Kurzanov & Bannikov, 1983

Quaesitosaurus (meaning "extraordinary lizard") is a genus of nemegtosaurid sauropod containing only the type species, Q. orientalis, described in 1983. It lived from 72 to 71 million years ago during the Late Cretaceous epoch in the Barun Goyot Formation. With long, low and horse-like with frontally located peg-teeth, the skull of Quaesitosaurus is similar enough to the skull of Diplodocus and its kin to have prompted informed speculation that the missing body was built like those of diplodocids.