Fig. 9 in Phylogenetic Analyses Of Postcranial Skeletal Morphology In Didelphid Marsupials

Fig. 9. Hyladelphys kalinowskii (RSV 1572) and Caluromysiops irrupta (AMNH 244364), pelvis, sacrum, and posterior lumbar vertebrae in dorsal view. In Hyladelphys, just the first sacral vertebra (S1) is contacting the illium (il) (ch. 38[0]), whereas in Caluromysiops both sacral elements (S1 and S2) are contacting the illium (ch. 38[1]). Note the absence of the posterior process on the lateral sacral crest of S2 in Hyladelphys (ch. 39[0]). Other abbreviations: ac, acetabulum; is, ischium; of, obturator foramen. Scale bars: 5 mm.