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. 2014 Dec 29;9(12):e115734. doi: 10.1371/journal.pone.0115734

Figure 5. Reconstructions of sacral vertebrae of basal synapsids examined in this paper and hypothesized homologous sacral positions.

Figure 5

A: reconstruction of sacral vertebrae of Eocasea martini based on the holotype (KUVP 9616b). B: reconstruction of sacral vertebrae of Casea broilii based on FMNH UR 2512. C: reconstruction of sacral vertebrae of Varanosaurus acutirostris modified from Sumida [19]. D: reconstruction of sacral vertebrae of Ophiacodon retroversus from Romer and Price [8]. E: reconstruction of the sacral vertebrae of the basal varanopid Archaeovenator hamiltonensis based on the holotype (KUVP 12483). F: reconstruction of the sacral vertebrae of Varanodon agilis based on FMNH UR 986. G: reconstruction of the sacral vertebrae of Edaphosaurus boanerges based on the description of MCZ 1372 from Romer and Price [8] and ROM 7985. H: reconstruction of the sacral vertebrae of Dimetrodon limbatus, modified from Romer and Price [8]. Dashed lines indicate portions of the skeleton that were either extrapolated from the literature or were damaged on the specimens.