The type and only species is Borealosaurus wimani, based on fragmentary remains from the Sunjiawan Formation of Liaoning. The morphology of a mid-distal caudal vertebra was considered suggestive of a relationship with the Mongolian titanosaur Opisthocoelicaudia. However, in their overview of Cretaceous sauropod remains from Central Asia, Averianov and Sues considered Borealosaurus a non-lithostrotian titanosaur due to the lack of procoely in the middle caudal vertebrae.[1]
It was described by Hailu, Qiang, Lamanna, Jinglu and Yinxiang, in 2004. It was named from GreekΒορεας (the North wind) and σαυρος (lizard), with its specific name being given in honor of SwedishpaleontologistCarl Wiman, who named the first Chinese dinosaur.[3]
^You, H.; Ji, Q.; Lamanna, M. C.; Li, J.; Li, Y. (2004). "A titanosaurian sauropod dinosaur with opsithocoelous caudal vertebrae from the early Late Cretaceous of Liaoning province, China". Acta Geologica Sinica. 78 (4): 907–911. Bibcode:2004AcGlS..78..907Y. doi:10.1111/j.1755-6724.2004.tb00212.x.