Rear half of skeleton, dorsal series, caudal series. Although the skull, cervical vertebrae, most of the dorsal vertebrae, and some of the girdle and foot bones are not known in C.stewarti, this form from the upper Jurassic of England (Charig,1980) clearly belongs to the Diplodocidae, but it is less clear wheter it should be assigned to the Diplodocinae or the "Mamenchisaurinae".