Figure 7. Computer generated views of the skull of Pachyrhachis problematicus specimen (HUJ-PAL 3659) in (7.1) ventral and (7.2) dorsal views; 7.3, serial sections of the area indicated by highlighted section of surface model, representing every tenth slice from 150 through 320 to illustrate the topological relationships of elements in the posterior portion of the skull. Abbreviations: atn, atlas neural arch; ax, axis vertebra; bs, basisphenoid; bo, basioccipital; c, compound bone; cor, coronoid; ex, exoccipital; psc, parietal sagittal crest; pt, pterygoid; q, quadrate; s, stapes; so, supraoccipital; st, supratemporal. Scale bar equals one centimeter.