Fig. 31 in Phylogenetic Analyses Of Postcranial Skeletal Morphology In Didelphid Marsupials

Fig. 31. Chironectes minimus (AMNH 148720), plantar and dorsal views of left astragalus. The ridge between the medial (atim) and lateral (atil) astragalotibial facets is present (ch. 108[1]), as well as being between the lateral atragalotibial and astragalofibular (afi) facets (ch. 109[1]). There is no contact between the astragalonavicular (an) and sustentacular (su) facets (ch. 110[0]), and the sustentacular facet is separated from the calcaneoastragalar (caa) facet by the well-developed sulcus astragali (sa) (ch. 111[0]). Other abbreviation: ampt, astragalar medial plantar tuberosity. Scale bar: 5 mm.