来自埃塞俄比亚的新物种进一步扩大了中纪人类的多样性
Yohannes Haile-Selassie1, Luis Gibert2, Stephanie M Melillo3
11] Cleveland Museum of Natural History, Cleveland, Ohio 44106, USA [2] Case Western Reserve University, Cleveland, Ohio 44106, USA.
Nature
|May 29, 2015
概括
在埃塞俄比亚发现了一种新的人类物种, Australopithecus deyiremeda,可以追溯到330万至350万年前. 这一发现证实了中世时期早期人类的显著多样性.
科学领域:
- 古人类学古人类学.
- 人类进化人类进化
- 非洲古生物学 非洲古生物学
背景情况:
- 中世原始人物种多样性受到争议,提出了澳大拉皮铁克斯·阿法伦斯,澳大拉皮铁克斯·巴赫雷尔加扎利和肯雅罗普斯·普拉蒂奥普斯 (Kenyanthropus platyops) 的共存.
- 之前的分析表明,在此期间,东非居住了多种人类物种.
- 埃塞俄比亚的阿法尔地区是了解早期人类进化的一个关键区域.
研究的目的:
- 为了描述一个新的人类物种,澳大拉皮铁克斯 (Australopithecus deyiremeda sp. 11月,来自埃塞俄比亚的沃兰索-米尔地区.
- 为了研究在中世期间东非的原始人物种多样性.
- 分析新物种形态学的影响,以了解人类进化关系和牙同型.
主要方法:
- 化石挖掘和对原始人遗骸的分析来自330万至350万年前的沉积物.
- 牙形状特征的比较形态分析.
- 遗传学评估和分类学识别.
主要成果:
- 鉴定和描述的澳大利亚白虫 (Australopithecus deyiremeda sp. 在新的一年里.
- 在330万年前到350万年前的阿法尔地区,至少有两种同时代人类物种的证据.
- 在 Au. 的形态特征. 迪里塞梅达表明,早期出现的特征与后来的人类类 (Paranthropus和Homo) 相关,突出了牙性同类.
结论:
- 发现奥斯特拉洛皮塞克斯·迪尔雷梅达证实了在中普略纪期间东非的大量人族分类学多样性.
- 在此期间,阿法尔地区存在多个原始人物种,这挑战了关于原始人物种群结构的先前假设.
- 这项研究强调了人类进化途径的复杂性和关键牙特征的早期演变.
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