Fig. 4 in Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina

Fig. 4. Tarsal bones of Typotheria indet. (PVL 4292) from Pampa Grande, Salta Province, Argentina, Lower Lumbrera Formation, middle Eocene (Vacan subage of the Casamayoran SALMA). A. Left calcaneum in dorsal (A1), plantar (A2), lateral (A3), and medial (A4) views. B. Left astragalus in dorsal (B1), plantar (B2), posterior (B3), lateral (B4), and medial (B5) views. C. Articulated proximal tarsals in dorsal (C1) and plantar (C2) views. Abbreviations: aflig, attachment for the fibuloastragalar ligament; ampt, astragalar medial plantar tuberosity; atlig, attachment for the tibioastragalar ligament; be, "beak" (Cifelli 1983, 1993); cub, cuboidal facet; dfor, dorsal astragalar foramen; fib, fibular facet; gfhl, groove for the tendon of the flexor hallucis longus muscle; ifor, inferior astragalar foramen; mmt, facet for the medial malleolus of the tibia; pfo, peroneal fossa; psh, peroneal shelf; ptub, peroneal tubercle; qpm, attachment of the quadratus plantae muscle (Cifelli 1983); tg, tendinous groove.