Figure 22. cf. Stormbergia. SAM-PK-K1107, reconstruction of posterior dorsals, sacrum and anterior caudals in articulation with the right ilium, to show positions of sacral rib attachment and probable incorporation of vertebrae into sacrum. The ancestral two sacrals are shown in dark grey, the caudosacral (sacral 5) is shown in light grey, the first dorsosacral (sacral 2) is cross-hatched and the second dorsosacral is shown with a fill of parallel, diagonally orientated lines. Matt black areas represent the attachment of the sacral ribs to the medial surface of the ilium. Labels refer to the vertebrae directly above them. Abbreviations: bs, brevis shelf; cav1, caudal 1; cs, caudosacral; ds1, ds2, dorsacrals 1 and 2; sv1, sv2, ancestral sacrals 1 and 2.