Figure 28: Dorsoventral vertebral proportions on the anterior caudal vertebrae of selected ornithopods. (A) Neural arch height ‘a’ (=height from dorsal tip of the spinal process to top of the centrum, or centre of transverse process base) relative to vertebral height ‘b’ (=vertebral height without haemal arch). (B) Neural arch height ‘a’ relative to vertebral height ‘c’ (=vertebral height including haemal arch). Distances ‘a’ and ‘b’ shown in Figs. 9 and 33 and distance ‘c’ shown in Fig. 9. Data sources, see Table S1. Tabulated data, vertebral positions and specimen numbers, see Table S2.