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首页> 外文期刊>Folia Primatologica: International Journal of Primatology: = Internationale Zeitschrift fur Primatologie: = Journal International de Primatologie >Nasal Anatomy of Paradolichopithecus gansuensis (Early Pleistocene, Longdan, China) with Comments on Phyletic Relationships among the Species of this Genus
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Nasal Anatomy of Paradolichopithecus gansuensis (Early Pleistocene, Longdan, China) with Comments on Phyletic Relationships among the Species of this Genus

机译：甘肃假单胞菌（早更新世，中国龙丹）的鼻部解剖学，并对该物种之间的亲缘关系作了评论

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摘要

Paradolichopithecus was a large cercopithecine primate that existed in Eurasia from the middle Pliocene to the early Pleistocene. Para. arvernensis from the late Pliocene of Seneze, France, shows no maxillary sinus, whereas Para. sushkini from the late Pliocene of Kuruksay, Tajikistan, has this feature. In this study, we examined a new maxillary specimen of Para. gansuensis from the early Pleistocene of Longdan, China. The Longdan maxilla had lost its facial part, which exposed the internal floor of the nasal region. The nasal floor expands laterally, making the maxillary body thin at the P~3-M~2 level and thick at the M3 level and extending to the maxillary tubercle. Such a topography is seen in the Seneze and Kuruksay crania. The Longdan maxilla shows no evidence of the formation of a maxillary sinus within the inferior portion of the thick maxillary body, as is seen in the Seneze cranium. Such a configuration could reflect the absence of a maxillary sinus in the Longdan specimen. Eastern Para. gansuensis might have dispersed eastward re- taining a primitive condition, while central Para. sushkini would have acquired this feature independently in central Eurasia.
机译：伞形上古猿属是大型的上古猿灵长类动物，存在于欧亚大陆的中上新世至早更新世。对法国Seneze上新世晚期的arvernensis没有上颌窦，而Para。塔吉克斯坦库鲁克塞上新世晚期的sushkini具有此功能。在这项研究中，我们检查了Para的新上颌标本。中国龙丹更新世早期的甘肃龙胆上颌骨失去了面部，露出了鼻腔内部。鼻底向侧面扩展，使上颌骨在P〜3-M〜2水平变薄，在M3水平变厚，并延伸到上颌结节。在Seneze和Kuruksay crania中可以看到这样的地形。如在塞内兹颅骨中所见，龙胆上颌骨没有显示出在上颌骨厚实下部内形成上颌窦的证据。这样的构造可能反映出龙胆标本中没有上颌窦。东段。甘肃可能在保持原始状态的同时向东扩散，而在帕拉中部。 sushkini本可以在欧亚大陆中部独立获得此功能。

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