Dissertation Research: Dental Development in Upper Pleistocene Hominids and Recent Humans

这是一个调查的相对比率， 晚更新世化石牙齿矿化模式 原始人（尼安德特人和早期现代人）与 三个最近的人类地理种群 使用标准 评分系统，各阶段的频率分布， 任何牙齿相对于特定状态所显示的发育 的发展“参考”牙齿将得出的 最近的人体样本 这些分布将与 确定是否存在显著差异， 现代人类牙齿钙化率和模式 样品 这些最新的人类数据将提供必要的 评估差异性质和程度的背景 现代人类和上更新世人科化石之间的联系 相对的牙齿发育，所以任何差异，在整体上 可以评估成熟率。 我们对这两者之间的区别的理解存在一个重大差距， 尼安德特人和现代人类缺乏对他们 牙齿发育 我们知道现代人有着 延迟牙齿成熟，有强有力的证据表明， 最早的原始人有更快的牙齿 发展 快速的牙齿发育意味着 发展时期的影响， 行为成熟 这种转变是发生在 尼安德特人 尼安德特人有成人的大脑大小， 与现代人类相似的体型。 但是， 在相同的时间和速度下成熟？ 这项研究将有助于 了解现代人生活史中可能存在的差异 人类和尼安德特人

This is an investigation into the relative rates and patterns of dental mineralization in Upper Pleistocene fossil hominids (Neanderthals and early modern humans) compared with three recent human geographic populations. Using a standard scoring system, frequency distributions of the various stages of development that any tooth displays relative to specified states of development of a "reference" tooth will be derived for the recent human samples. These distributions will be compared to determine whether significant differences exist in relative dental calcification rates and patterns among recent human samples. These recent human data will provide the necessary background for assessing the nature and extent of differences between recent humans and Upper Pleistocene fossil hominids in relative dental development, so that any differences in overall maturation rates can be assessed. A major gap in our understanding of the difference between Neanderthals and recent humans is a lack of knowledge of their dental development. We know that modern humans have extremely delayed dental maturation, and there is strong evidence that the earliest hominids had a much more rapid rate of dental development. Rapid dental development implies a shorter developmental period with implications for the timing of behavioral maturation. Did the shift occur before or after the Neanderthals? Neanderthals have adult brain sizes and overall body sizes similar to those of modern humans. But, did they mature at the same time and rate? This study will assist in understanding possible differences in the life history of modern humans and the Neanderthals.