Figure 15 in A peculiar climbing Megalonychidae from the Pleistocene of Peru and its implication for sloth history

Figure 15. Left astragali in dorsal (A–G, posterior towards the top, medial towards the left), plantar (H–N, posterior towards the top, medial towards the right), and distal (O–S, dorsal towards the top, medial towards the left) views of: A, H, O, Megatherium urbinai (MUSM 15) from the Pleistocene of Sacaco, Peru (Pujos & Salas, 2004a); B, I, P, Planops martini (cast of BMNH M-9214) from the lower Miocene of Cap Fairweather, Patagonia, Argentina (Hoffstetter, 1961: 61); C, J, Q, Hapalops sp. (MNHN SCZ 168, unpublished astragalus) from the Santacrucian (Early Middle Miocene) of Río Coyle, Patagonia, Argentina; D, K, Megalocnus rodens [AMNH 49984, from Matthew & Paula Couto (1959) reversed from the original] from the Pleistocene of Cuba; E, L, Pliometanastes protistus [UF 9440, from Hirschfeld & Webb (1968)] from the Early Amphillian (Middle Pliocene) of Florida, USA; F, M, R, Xyophorus villarroeli (MNHN ACH 15, reversed from the original) from the Huayquerian (Late Miocene) of Achiri, Bolivian Altiplano (St-André, 1996: fig. 8); G, N, S, Diabolotherium nordenskioldi gen. nov. (MNHN CPN 9–1, referred specimen) from the Lujanian (Late Pleistocene) of Piedra Escrita site, Cupisnique Desert, Peru. The arrows underline the transformation of the astragalar morphology: A–G, the angle between the principal axis of the discoid and odontoid processes and the position of the 'stud' relative to the principal axis of the discoid facet; H–N, extension(s) of the ectal facet; O–S, the angle between the surfaces of the discoid and odontoid facets. Scale bar = 2 cm.