【摘要】 本文是对1989年12月至1990年2月在云南元谋雷老村——一个上新世古猿化石新地点所采集的五枚古猿牙齿化石的初步研究报告。研究表明,雷老标本在尺寸上可分大、小两个类型。它们可能是同一种的雌雄个体。在形态上它们与开远、禄丰石灰坝、元谋小河和竹棚发现的古猿牙齿大体相同,但在有些重要特征上与开远和禄丰的不同,而与小河、竹棚的相似。因此,作者认为雷老标本可与小河、竹棚的归为同类,即均属于猿科:西瓦古猿属。而与开远、禄丰的标本相比较,雷老的标本应是不同的新种,即待订种。更多还原

【Abstract】 Five teeth of the early Pliocene hominoid were collected at a new fossil locality Leilao village in Yuanmou, Yunnan in 1989 and 1990. The teeth are divided into two kinds according to size, the specimens of small type are left C (YM ?201), left P3 (YM ?202) and right M1 (YM ?203); the specimens of big type are left M2 (YM ?204) and left M3 (YM ?205).A comparative study of the teeth showed that the small and big ones could represent the female and male of a single species respectively. They are very similar to the hominoid teeth from Xiaohe and Zhupeng, Yuanmou in morphology and size, therefore, the hominoids of these three localities are considered as belonging to the same morphological type. It probably belongs to Family Pongidae and Genus Sivapithecus.Many morphological features of Leilao teeth are close to those of the hominoids from Keiyuan and Lufeng, Yunnan (Dryopithecus keiyuanensis and Lufengpithecus), but Leilao teeth are different from those of Keiyuan and Lufeng hominoids in some important features, so they are considered as belonging to different species.更多还原