Here, we report on a new collection of mostly isolated molars of a colobine monkey from near Hasnot on the Potwar Plateau of Pakistan. The specimens are from three late Miocene localities, with ages constrained to between 7.9 and 7.1 Ma. Morphological and metrical comparisons of the new Hasnot molars with those of previously recognized Mesopithecus species and living Asian colobines lead to the conclusion that the Hasnot colobine is most probably Mesopithecus, but not Mesopithecus pentelicus. The most morphologically distinctive aspect of the Hasnot specimens is the lower third molars, which exhibit large and bulbous protoconids set off by deeply incised mesial buccal and median buccal clefts and large, broad distobuccally placed hypoconulids. Colobine specimens previously recovered from the Potwar Plateau have been assigned to Mesopithecus sivalensis, but because these specimens have not yet been fully described, a detailed comparison with the new Hasnot specimens is not yet possible. For these reasons, we assign the new Hasnot colobine fossils to cf. Mesopithecus sp. Mesopithecus was one of the most widespread and successful of late Miocene primates. As a colobine equipped with features of the molar teeth, limbs, and, presumably, gut enabling it to succeed in more highly seasonal woodland environments, Mesopithecus was able to rapidly disperse into and adapt to the conditions in South Asia brought about by profound climatic and concomitant environmental change during the latest Miocene.

在这里，我们报道了来自巴基斯坦波塔尔高原哈斯诺特附近的疣猴的大部分孤立磨牙的新报道。这些标本来自三个中新世晚期，年龄限制在7.9至7.1 Ma之间。新的Hasnot臼齿与先前公认的Mesopithecus物种和亚洲活的Colobines的形态学和度量比较得出以下结论：Hasnot colobine最有可能是Mesopithecus，但不是Penophusus Mesopithecus。Hasnot标本最形态上最独特的方面是下部的第三磨牙，其表现为大而球形的原生分生孢子，其通过深切的颊中颊颊裂和颊中位裂隙以及大而宽的非口腔放置的过乳突引起。先前从Potwar高原回收的Colobine标本已分配给sivalensis，但由于尚未对这些标本进行完整描述，因此尚无法与新的Hasnot标本进行详细比较。由于这些原因，我们将新的Hasnot colobine化石分配给cf。Mesopithecus sp。间皮是晚期中新世灵长类动物中分布最广且最成功的动物之一。作为具有齿臼齿，四肢和肠胃特征的co足，Mesopithecus能够在更季节性的林地环境中获得成功，因此能够迅速散布并适应深亚气候和气候所带来的南亚条件。最近的中新世时期伴随的环境变化。