 Huene felt the vertebrae of BMNH R3078 had proportions different enough from Cetiosaurus to warrant its own genus. Also, the fusion of centra with minimal osseous proliferation is manifest in the caudal vertebrae of Cetiosauriscus. The Cetiosaurus specimen OUMNH J13695 has a low horizontal ridge on each of its lateral surfaces, creating a slightly subhexagonal transverse cross-section, and is also seen on Cetiosauriscus, as well as the anterior caudals of Haplocanthosaurus, and caudals 15 to 30 of Omeisaurus. Also, the area around the periphery of each articular face is flattened, creating a 'bevelled' appearance, and also occurs in Cetiosaurus and Haplocanthosaurus. A whiplash tail was apparently found in the same deposits but it is not certain it belongs to the same individual. Since there is no overlapping material, this assignment to Cetiosauriscus should be treated with caution.
