Khurendukhosaurus Sigogneau-Russell and Efimov, 1984

Matsumoto, Ryoko, Tsogtbaatar, Khishigjav, Ishigaki, Shinobu, Tsogtbaatar, Chinzorig, Enkhtaivan, Zorig & Evans, Susan E., 2019, Revealing body proportions of the enigmatic choristodere reptile Khurendukhosaurus from Mongolia, Acta Palaeontologica Polonica 64 (2), pp. 363-377 : 365

Genus Khurendukhosaurus Sigogneau-Russell and Efimov, 1984

Type species: Khurendukhosaurus orlovi ( Sigogneau-Russell and Efimov, 1984) ; Albian , Khuren-Dukh Formation, Mongolia .

Emended diagnosis. —A medium-sized choristodere characterized by the following combination of characters: marginal tooth bases mediolaterally extended; basal tubera of the basioccipital moderately expanded laterally; cervical vertebral count at least 13; neural spines of cervical vertebrae short; zygapophyses nearly horizontal; neurocentral sutures closed; neural spines of dorsal vertebrae anteroposteriorly elongated with transversely expanded, rugose spine tables; tall narrow caudal vertebral neural spines; waisted ilium with an almost rectangular iliac blade patterned by coarse anteroposterior ridges.

Stratigraphic and geographic range.—Lower Cretaceous (Albian, Late Barremian–Middle Aptian), Mongolia and Russia.