Caihong probably has ten neck vertebrae, thirteen back vertebrae, five sacral vertebrae and twenty-six tail vertebrae. The dorsal vertebrae of the back do not possess pleurocoels. The tail is short, with a length of 178 millimetres. The transition to the middle tail, defined as the point behind which transverse processes are completely lacking, is between the seventh and eighth vertebra. Vertebrae more to the rear gradually become more elongated.
