was found near Jensen, Utah, by Jensen, and – if it belongs to Brachiosaurus
– is one of a handful of neck vertebrae known for American brachiosaurids.
An anterior cervical shows a moderately developed ventral keel; the other cervical is broadened ventrally but with a slight longitudinal ridge.
The tenth cervical has a space, the hypantrum,to receive the hyposphene of CE9.
This is especially noticeable in the Early Cretaceous brachiosaurid Sauroposeidon, where the exposed length of the eighth cervical is 1.25 m
In contrast, the fifth cervical is considerably shorter (ratio of c. 1.05) and the seventh cervical relatively longer (c. 1.75) in the latter taxon.
Each cervical bears a small lateral process, presumably for muscle attachment, but the first rib is attached to CV4.