《Table 4 Measurements of calcaneus of Teleolophus medius (IVPP V 23887) (mm)》

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《内蒙古二连盆地沙拉木伦地区中始新世全脊貘(Teleolophus)(奇蹄目:貘超科)头后骨骼研究（英文）》

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PE=proximal end；DE=distal end；APD=anteroposterior distance.

Astragalus Three right astragali are preserved.One left astragalus is articulated with the tibia in position（IVPP V 23887）（Fig.3） ，and two isolated left astragali are also preserved（IVPP V 23890.4–5）（Fig.5A–E；Table 3） .The height of the trochlea is about equal to its width（Fig.5A）.The median groove is relatively wide and moderately deep.The trochlea is asymmetrical with a lateral part wider and more gradual than a medial one.The ridges of the trochlea are blunt，and the medial ridge is separated from the navicular facet by a short distance as in Heptodon and Helaletes.However，the medial ridge of the trochlea either contacts the navicular facet or is separated from the latter by a short distance in Deperetella（AMNH FM81817）.The ridges of trochlea are sharper with the medial ridge contacting the navicular facet in Lophialetes.The astragalus of Helaletes is high and narrow，having relatively sharper ridges of the trochlea and a longer neck than that of the Teleolophus（Peterson，1919:pl.42，fi g.8）.The astragalus of Colodon has a relatively lower and wider trochlea than that of Teleolophus with a medial ridge joining the navicular facet（Scott，1941）.The lateral surface of the trochlea for the fi bula is slightly concave and lacks a laterally projected process on the distal end as in Deperetella（Fig.5A，D），whereas the laterally projected process is present in other compared taxa.The medial surface of the trochlea for the medial malleolus is slightly convex without a proximal，medially projected process as that of Deperetella（Fig.5A，C），whereas the proximal process is present in Lophialetes.Distomedial to the medial ridge of the trochlea there is a moderately deep fossa.The neck is relatively short.