Revised diagnosis of Datousaurus bashanensis by Peng, G.; Ye, Y.; Gao, Y.; Shu, C. & Jiang, S. (2005)

Large-sized sauropd recognized by big and heavily built skull; short but high facial region; anteriorly positioned extrenal naris; small antorbital fenestra; quadrate slightly inclined forward; robust premaxilla and maxilla; deep and heavily built lower jaws lacking external mandibular fenestra; big and spoon-shaped teeth with higher crown; dental formula Pm4 + M10~12 / D12~14; 12 cervicals, 13 dorsals, 5 sacrals and more than 45 caudals; moderately elobgated cervicals with longest one about 2.5 times of average length of dorsals; opistocoelous cervical centra with developed pleurocoels and ventral keels; relaticely low cervical neural arches and spines with developed lamellar structures; spines of posterior cervicals and anterior dorsals transversely broadened but not bifurcated; weakly opistocoelous or plateocoelous dorsal centra with weak pleurocoels; neural spines of posterior dorsals high and bar-like; all sacral centra and arches and first four spines fused; weakly amphicoelous anterior caudals with short and high centra; elongate scapula; oval-shaped coracoid; low and elongate ilium with developed pubic peduncle and plate-like ischial peduncle; and bones of limbs relatively straight and robust.

Holotype: An incomplete skeleton and an incomplete skull IVPP V 7262 and V 7263.

Included material: Including two individuals: 1. CV 00740, an incomplete skull 2. ZDM 5021, a complete skeleton.

Locality and horizon: Dashanpu, Zigong, Xiashaximiao Formation, Middle Jurassic

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