Fig. 3 in Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina

Fig. 3. Tarsal bones of typotherian notoungulate Colbertia lumbrerense Bond, 1981 (PVL 6227) from Pampa Grande, Salta Province, Argentina, Lower Lumbrera Formation, middle Eocene (Vacan subage of the Casamayoran SALMA). A. Left dorsoplantarly compressed calcaneum in dorsal view. B. Left astragalus in dorsal (B1), plantar (B2), posterior (B3), lateral (B4), and medial (B5) views. C. Right dorsoplantarly compressed astragalus in medial view. Abbreviations: ampt, astragalar medial plantar tuberosity; dfor, dorsal astragalar foramen; gfhl, groove for the tendon of the flexor hallucis longus muscle; nav, navicular facet; sus, sustentacular facet.