《Table 3 The comparison between crown heights of the upper and lower cheek teeth of Chilotherium lic

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《"甘肃庆阳晚中新世大唇犀属(奇蹄目,犀科)一新种（英文）"》

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（mm）

Chilotherium anderssoni，the type species of the genus Chilotherium，was described by Ringstr?m in 1924.That species has a U-shaped nasal notch，a weak crochet on M3，a weak crochet and crista on P2（not linking together to form a medifossette），and a continuous lingual cingulum on the premolars.In contract，C.licenti has a V-shaped nasal notch，nearly absent labial and buccal cingula on the premolars，medifossettes present from P2 to M2.C.licenti has a fl at cranial dorsal profi le，a thin dorsal orbital margin，narrow nasals，and fl at outer walls of cheek teeth.Those features are obviously more derived than the characters of C.primigenius，C.wimani and C.xizangensis.Furthermore，C.licenti is somewhat larger than the three other Chinese species，which is shown in Table 1.And the measurements of the cheek teeth ofC.licenti sp.nov.compared with other species of Chilotherium are shown in Table 2.The upper cheek teeth of C.licenti show derived characters that distinguish them from those of C.wimani，including a fl at buccal wall almost without a paracone rib and parastyle fold，and strongly constricted protocones and hypocones.C.primigenius，an early Late Miocene species（Deng，2006），has the primitive characters which are diff erent from C.licenti.C.xizangensis is similar to C.wimani，in that they both have a saddle-backed cranial dorsal profi le，projecting anterior and thick dorsal margins of the orbits，a low crown，and marked parastyle folds（Ji et al.，1980；Deng，2001a）.This new species is different from C.habereri evidently based on some characters on the upper cheek teeth.In C.licenti，the lingual and buccal cingula on premolars are nearly absent and the medifossettes are present on P2–M2.However the cingula of C.habereri are continuous，and there is a medifossette only on premolars，not on molars（Ringstr?m，1924）.