The holotype material consists of a single anterior caudal vertebra. Also, a tooth and a few proximal tail vertebrae (from near the base of the tail) were originally described as belonging to this species, but these probably belong to an indeterminate hadrosaur.[1][2] The vertebrae are unusual in being weakly heterocoelous,[3] which means that the centrum or body of a vertebra has saddle-shaped surfaces where it meets the vertebrae in front or behind it.
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