In 1984 He Xinlu named and described the type species Kaijiangosaurus lini. The generic name refers to the River (jiang) Kai. The specific name honours the paleontologist Lin Wenqiu.[1] The holotype, CCG 20020, was in Sichuan discovered in a layer of the Xiashaximiao Formation dating from the Bathonian-Callovian. The main find consists of a fragmentary skeleton lacking the skull. The holotype proper contains the intercentrum of the atlas and the third to ninth neck vertebrae. Other elements have been designated as a paratype, including fragmentary remains of the skull, nine teeth, elements of the pectoral girdle, a forelimb, and a hindlimb. Another paratype is the thighbone of a probably smaller individual.[1] Holtz al (2004) mentioned much more complete specimens, but they are undescribed