. Bulletin. Natural history; Natuurlijke historie. 54 PEABODY MUSEUM BULLETIN 42. Fig. 16. The tibia of Wortmania otariidens, AMNH 3394. a) Anteromedial view of left tibia, b) Posterolateral view of left tibia. Abbreviations: a = surface for astragalus; c = crest; fi = surface for fibula; if = intercondyloid fossa (= intercondylar notch); im = internal malleolus; it = internal tuberosity; mc = medial condyle; p = descending process; t = tuberosity. Scale is 4 cm long. Tibia The proximal part of the left tibia of AMNH 3394 has been crushed laterally, but the main features are clear (Fig. 16; PI
. Bulletin. Natural history; Natuurlijke historie. 54 PEABODY MUSEUM BULLETIN 42. Fig. 16. The tibia of Wortmania otariidens, AMNH 3394. a) Anteromedial view of left tibia, b) Posterolateral view of left tibia. Abbreviations: a = surface for astragalus; c = crest; fi = surface for fibula; if = intercondyloid fossa (= intercondylar notch); im = internal malleolus; it = internal tuberosity; mc = medial condyle; p = descending process; t = tuberosity. Scale is 4 cm long. Tibia The proximal part of the left tibia of AMNH 3394 has been crushed laterally, but the main features are clear (Fig. 16; PI. 19: figs. 4, 5). Overall, the tibia is relatively short and stout w^ith enlarged proximal and distal ends. The proximal end preserves the large, flat internal condyle and prominent internal tuberosity. The anterior tuberosity and cnemial crest are moderately well developed. Dis- tally, the tibia bears a large internal malleolus and externally a large concave facet for the distal end of the fibula which was not fused to the tibia; this is the same condition seen in all taeniodonts for which the tibia or fibula is known. The articular surface for the astragalus faces almost straight down and is mod- erately concave anteroposteriorly. Medially, it is slightly concave transversely, whereas toward the lateral edge it is slightly convex and then slightly concave again. Overall, it is similar to the tibia of Psittacotherium, but smaller and less Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Peabody Museum of Natural History. New Haven : The Museum
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