Calcium isotopic ecology of Turkana Basin hominins

Calcium isotopic ecology of Turkana Basin hominins
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图尔卡纳盆地古人类的钙同位素生态学

DOI:
10.1038/s41467-020-17427-7
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发表时间:
2020
影响因子:
16.6
通讯作者:
Balter, Vincent
Balter, Vincent
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Martin, Jeremy E.;Tacail, Théo;Braga, José;Cerling, Thure E.;Balter, Vincent

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饮食是人类进化的主要驱动力,但大多数地球化学证据依赖于碳同位素(δ 13 C)。在此,我们报告了图尔卡纳盆地地区几种古人类和共存灵长类的釉质稳定钙同位素(δ44/42 Ca)值与δ 13 C值,时间约为4 - 2 Ma。南方古猿与哺乳动物的浏览者聚在一起,肯尼亚人与南方古猿不同,在更开放的环境中觅食,共存的兽猿包括食草动物和杂食动物/食肉动物。早期智人的δ44/42 Ca值分布较广,可能反映了杂食性和机会主义偏好,鲍氏傍人(Paranthropus boisei)在δ 13 C与δ44/42 Ca的空间分布独特,不同于图尔卡纳盆地地区的所有其他人类以及共存的奥斯瓦尔迪兽猿(Theropithecus oswaldi)。本文探讨了几种假说来讨论鲍氏傍人独特的δ44/42 Ca值,包括与最近报道的南非粗壮傍人的δ44/42 Ca值的显著差异,质疑该属的单系性。
Diet is a major driver of hominin evolution, but most of the geochemical evidence relies on carbon isotopes (δ13C). Here, we report enamel stable calcium isotope (δ44/42Ca) values against δ13C values for several hominins and co-existing primates in the Turkana Basin area, circa 4 to 2 Ma.Australopithecus anamensisclusters with mammal browsers,Kenyanthropus platyopsis distinct fromA.anamensisin foraging into more open environments and the coexistingTheropithecus brumptiencompasses both the grazer and omnivore/carnivore domains. EarlyHomois remarkable for its wide distribution in δ44/42Ca values, possibly reflecting omnivorous and opportunistic preferences.Paranthropus boiseiis uniquely distributed in the δ13C versus δ44/42Ca iso-space being distinct from all other hominins from the Turkana Basin area as well as from the co-existingTheropithecus oswaldi. Several hypotheses are explored to discuss the unique δ44/42Ca values ofParanthropus boiseiincluding significant differences observed with δ44/42Ca values recently reported forP.robustusfrom South Africa, questioning the monophyly of this genus.
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