牙釉质形成的短期和长期生长标记可区分欧洲更新世古人类。
Short and long period growth markers of enamel formation distinguish European Pleistocene hominins.
机构信息
Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo Sierra de Atapuerca 3, 09002, Burgos, Spain.
Department of Anthropology, University College London, London, WC1H 0BW, UK.
出版信息
Sci Rep. 2020 Mar 13;10(1):4665. doi: 10.1038/s41598-020-61659-y.
Characterizing dental development in fossil hominins is important for distinguishing between them and for establishing where and when the slow overall growth and development of modern humans appeared. Dental development of australopiths and early Homo was faster than modern humans. The Atapuerca fossils (Spain) fill a barely known gap in human evolution, spanning ~1.2 to ~0.4 million years (Ma), during which H. sapiens and Neandertal dental growth characteristics may have developed. We report here perikymata counts, perikymata distributions and periodicities of all teeth belonging to the TE9 level of Sima del Elefante, level TD6.2 of Gran Dolina (H. antecessor) and Sima de los Huesos. We found some components of dental growth in the Atapuerca fossils resembled more recent H. sapiens. Mosaic evolution of perikymata counts and distribution generate three distinct clusters: H. antecessor, Sima de los Huesos and H. sapiens.
研究化石人类的牙齿发育对于区分不同物种以及确定现代人缓慢的整体生长和发育出现的时间和地点非常重要。南方古猿和早期人类的牙齿发育速度比现代人快。阿塔普尔卡化石（西班牙）填补了人类进化中一个鲜为人知的空白，跨越了约 120 万年至 40 万年（Ma），在此期间，智人和尼安德特人的牙齿生长特征可能已经发展起来。我们在这里报告了属于 Sima del Elefante 的 TE9 水平、Gran Dolina（H. antecessor）的 TD6.2 水平和 Sima de los Huesos 的所有牙齿的牙釉质纹饰计数、牙釉质纹饰分布和周期性。我们发现阿塔普尔卡化石中的一些牙齿生长成分与最近的智人更为相似。牙釉质纹饰计数和分布的镶嵌进化产生了三个不同的聚类：H. antecessor、Sima de los Huesos 和 H. sapiens。
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