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Massive cranium from Harbin in northeastern China establishes a new Middle Pleistocene human lineage
Ni, Xijun Ji, Qiang Wu, Wensheng Shao, Qingfeng Ji, Yannan Zhang, Chi Liang, Lei Ge, Junyi Guo, Zhen Li, Jinhua
Ni, Xijun
Ji, Qiang
Wu, Wensheng
Shao, Qingfeng
Ji, Yannan
Zhang, Chi
Liang, Lei
Ge, Junyi
Guo, Zhen
Li, Jinhua
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2021-06-25
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2021-05-10
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human phylogeny
human cranium fossil
human dispersal
human diversification
human cranium fossil
human dispersal
human diversification
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It has recently become clear that several human lineages coexisted with <i>Homo sapiens</i> during the late Middle and Late Pleistocene. Here, we report an archaic human fossil that throws new light on debates concerning the diversification of the <i>Homo</i> genus and the origin of <i>H. sapiens</i>. The fossil was recovered in Harbin city in northeastern China, with a minimum uranium-series age of 146 ka. This cranium is one of the best preserved Middle Pleistocene human fossils. Its massive size, with a large cranial capacity (∼1,420 mL) falling in the range of modern humans, is combined with a mosaic of primitive and derived characters. It differs from all the other named <i>Homo</i> species by presenting a combination of features, such as long and low cranial vault, a wide and low face, large and almost square orbits, gently curved but massively developed supraorbital torus, flat and low cheekbones with a shallow canine fossa, and a shallow palate with thick alveolar bone supporting very large molars. The excellent preservation of the Harbin cranium advances our understanding of several less-complete late Middle Pleistocene fossils from China, which have been interpreted as local evolutionary intermediates between the earlier species <i>Homo erectus</i> and later <i>H. sapiens</i>. Phylogenetic analyses based on parsimony criteria and Bayesian tip-dating suggest that the Harbin cranium and some other Middle Pleistocene human fossils from China, such as those from Dali and Xiahe, form a third East Asian lineage, which is a part of the sister group of the <i>H. sapiens</i> lineage. Our analyses of such morphologically distinctive archaic human lineages from Asia, Europe, and Africa suggest that the diversification of the <i>Homo</i> genus may have had a much deeper timescale than previously presumed. Sympatric isolation of small populations combined with stochastic long-distance dispersals is the best fitting biogeographical model for interpreting the evolution of the <i>Homo</i> genus.
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Xijun Ni, Qiang Ji, Wensheng Wu, Qingfeng Shao, Yannan Ji, Chi Zhang, Lei Liang, Junyi Ge, Zhen Guo, Jinhua Li, Qiang Li, Rainer Grün, Chris Stringer, Massive cranium from Harbin in northeastern China establishes a new Middle Pleistocene human lineage, The Innovation, Volume 2, Issue 3, 2021, 100130, ISSN 2666-6758, https://doi.org/10.1016/j.xinn.2021.100130.
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Copyright © 2020 The Author(s). This is an open access article under the CC BY-NC-ND license http://creativecommons.org/licenses/by-nc-nd/4.0/). The attached file is the accepted version of the article - you are advised to consult the published version if you wish to cite from it.
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2666-6758
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2666-6758
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openAccess