Bräuer G, Mehlman M J
Institut für Humanbiologie, University of Hamburg, West Germany.
Am J Phys Anthropol. 1988 Jan;75(1):69-76. doi: 10.1002/ajpa.1330750108.
Three hominid molars were recovered from a depth of 7.0-7.1 meters in the Mumba Shelter at Lake Eyasi, northern Tanzania. Geological context of the finds and archaeological data indicate that people with a Middle Stone Age technology were using the Mumba locality intermittently whenever retreat of lake waters allowed access to the site. Uranium series dates suggest an age on the order of 130,000 years bp for the teeth and stone tools. Based on morphological analyses, the dental remains probably belonged to one individual and appear to be the crowns of two upper permanent M2s and one lower permanent M2. Crown areas are very small, even in comparison to the variation exhibited by recent African populations. Crown patterns have no archaic features. These teeth are smaller than any verifiable archaic Homo sapiens examples; thus, they may represent early anatomically modern Homo sapiens.
在坦桑尼亚北部埃亚西湖畔的蒙巴避难所7.0至7.1米深处发现了三颗原始人类臼齿。这些发现的地质背景和考古数据表明，拥有中石器时代技术的人类，只要湖水退去能进入该地点，就会间歇性地使用蒙巴地区。铀系测年法显示，这些牙齿和石器的年代约为距今13万年。基于形态学分析，这些牙齿遗骸可能属于同一个体，似乎是两颗上颌恒磨牙和一颗下颌恒磨牙的牙冠。牙冠面积非常小，即使与近代非洲人群体所表现出的变异相比也是如此。牙冠形态没有古老特征。这些牙齿比任何可证实的古老智人标本都要小；因此，它们可能代表了解剖学上早期的现代智人。
