在Paranthropus robustus的地化学时间表中,牙为息地和生命史提供了信息
Andrew Sillen1, Christopher Dean2,3, Vincent Balter4
1Department of Anthropology, Rutgers University, New Brunswick, NJ, USA.
Nature ecology & evolution
|July 23, 2025
概括
在南非,早期人类的饮食和运动被用牙中的同位素分析. 发现揭示了多样化的息地和移动模式,包括本地和分散的个体.
科学领域:
- 古人类学古人类学.
- 地质化学 地质化学
- 同位素分析分析 同位素分析
背景情况:
- 化石牙面膜中的放射性同位素 (87Sr/86Sr) 和土比率 (AER) 提供了对早期人类生命历史的洞察.
- 了解息地利用和分散模式对于重建人类的行为至关重要.
研究的目的:
- 用地化学代理来重建Paranthropus robustus的息地,居住地和生命历史.
- 与黑猩猩和现代人类相比,研究分散模式.
主要方法:
- 开发了来自斯瓦特克兰斯和克罗姆德拉伊的20颗Paranthropus robustus牙的28个新的牙科时间表.
- 在牙面膜中对放射性同位素 (87Sr/86Sr) 和AER (Sr/Ca,Ba/Ca) 的分析.
- 通过使用87Sr/86Sr异构镜来确定局部同位素划分的开发区 (LIDEA) 的空间分辨率.
主要成果:
- 第三骨87Sr/86Sr汇聚到0.7306 ± 0.0035的LIDEA,表明普遍的资源使用 (优托邦),河森林的贡献很大.
- 地化学数据显示,第二矿化后的分散和局部成熟,表明了不同的居住模式.
- 对87Sr/86Sr和AER的分析表明,并发模式和周期可能与环境因素有关.
结论:
- 帕兰索普斯·罗布斯图斯 (Paranthropus robustus) 展示了普遍的息地利用和多样化的移动和居住策略.
- 牙面膜的地化学分析为了解早期人类古生态学和行为提供了强大的工具.
- 这些发现有助于区分人类的分散模式与其他灵长类动物的分散模式.
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