贵州穿洞遗址重构史前人类交流图景

贵州普定穿洞遗址是一处保存完整的史前遗址，为认识古人群交流提供了系统证据1。该遗址文化堆积厚达6米，人类活动连续跨度近7万年，时间范围距今约5万年至8000年，完整覆盖旧石器时代中期、晚期至新石器时代早期1。

遗址出土的关键文物揭示了多个重要信息1。考古人员发现了距今约5万年的早期现代人臼齿化石和距今5.1万年的人骨古DNA，这是中国南方较早的早期现代人分子生物学证据1。距今约3.7万年发现的穿孔装饰品是中国境内迄今所见最早经人工加工使用的石质装饰品1。同时期发现的窄槽砺石则是中国最早、东南亚地区发现最早最北端的同类器物1。遗址还出土了2500余件磨制骨角器，使其成为东亚地区磨制骨器出土最多、类型最丰富的旧石器时代遗址1。

古蛋白分析结果尤为引人瞩目1。研究显示距今5万多年至1.2万年间丹尼索瓦人的遗传信息持续出现，表明古人群存在多波次、持续性的基因交流1。此外，遗址距今约1.2万年前后发现的特殊人类埋葬行为M2也提供了独特视角，其中成年头骨被破碎为30多片，规律地呈8层叠放1。穿洞因此成为中国南方首个实现旧石器中期人类化石、晚期人类化石、过渡期墓葬三者共出的遗址1。

The Chuandong site in Puding County, Guizhou Province, represents one of China's most significant prehistoric discoveries, offering comprehensive evidence of human activity spanning nearly 70,000 years 1. With cultural deposits reaching six meters in depth, the site documents continuous human presence from approximately 50,000 years ago to 8,000 years ago, encompassing the Middle and Late Paleolithic through Early Neolithic periods 1.

Excavations have unearthed key artifacts that illuminate early human behavior and interaction patterns. These include an early modern human molar fossil dating to roughly 50,000 years ago, perforated stone ornaments from approximately 37,000 years ago—the earliest deliberately modified stone decorations yet found in China—and narrow-grooved whetstones from 37,000 to 33,000 years ago, representing the earliest examples discovered in East Asia and the northernmost in Southeast Asia 1. The site has also yielded over 2,500 ground bone and antler tools, making it the richest source of such artifacts from the Paleolithic era in East Asia in terms of both quantity and variety 1.

Molecular analysis has provided crucial insights into ancient population genetics. Ancient protein analysis reveals that Denisovan genetic material persisted consistently across the site from over 50,000 years ago through approximately 12,000 years ago, suggesting multiple waves of sustained gene flow among prehistoric populations 1. Human bone ancient DNA evidence from 51,000 years ago represents some of the earliest molecular biological evidence of early modern humans in southern China 1. The site has become the first in southern China to yield fossils from three distinct periods—Middle Paleolithic humans, Late Paleolithic humans, and a transitional burial—at a single location 1. A particularly remarkable discovery includes a burial from around 12,000 years ago featuring an adult cranium deliberately fragmented into over 30 pieces and systematically layered in eight successive levels, indicating complex funerary practices among prehistoric populations 1.