Characteristics that cannot be directly determined on the available bones were not included in the analysis. Eolambia and Tsintaosaurus were also not included in the analysis because these taxa are in need of revision according to Godefroit et al.
The aspects of the characteristics that cannot be determined from the existing fossil record were not considered in the study. Eolambia and Tsintaosaurus were also omitted from the analysis because they require reexamination, as suggested by Godefroit et al.