Relevant data of Zhanghenglong and detached intervals of the datasets consisting of the values of most hadrosauroids and some basal iguanodontians on selected measurement attributes*.

*the boundary value between the two intervals was estimated to be the average value of the greatest value from the former component with low values and the least value from the latter component with high values.C, the component resulting from MCA of the database consisting of the sample means of all measured taxa.