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首页> 美国卫生研究院文献>Proceedings of the National Academy of Sciences of the United States of America >The Homo floresiensis cranium (LB1): Size scaling and early Homo affinities
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The Homo floresiensis cranium (LB1): Size scaling and early Homo affinities

机译：弗洛雷斯人颅骨（LB1）：大小缩放和早期亲和力

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摘要

The skeletal remains of a diminutive small-brained hominin found in Late Pleistocene cave deposits on the island of Flores, Indonesia were assigned to a new species, Homo floresiensis [Brown P, et al. (2004) A new small-bodied hominin from the Late Pleistocene of Flores, Indonesia. Nature 431: 1055–1061]. A dramatically different interpretation is that this material belongs not to a novel hominin taxon but to a population of small-bodied modern humans affected, or unaffected, by microcephaly. The debate has primarily focused on the size and shape of the endocranial cavity of the type specimen, LB1, with less attention being paid to the morphological evidence provided by the rest of the LB1 cranium and postcranium, and no study thus far has addressed the problem of how scaling would affect shape comparisons between a diminutive cranium like LB1 and the much larger crania of modern humans. We show that whether or not the effects of its small cranial size are accounted for, the external cranial morphology of the LB1 cranium cannot be accommodated within a large global sample of normal modern human crania. Instead, the shape of LB1, which is shown by multivariate analysis to differ significantly from that of modern humans, is similar to that of Homo erectus sensu lato, and, to a lesser extent, Homo habilis. Our results are consistent with hypotheses that suggest the Liang Bua specimens represent a diminutive population closely related to either early H. erectus s. l. from East Africa and/or Dmanisi or to H. habilis.
机译：在印度尼西亚弗洛雷斯岛上的晚更新世洞穴沉积物中发现的一个小脑小人质的骨骼残留物被分配给一个新物种，弗洛雷斯人（Homo floresiensis）[Brown P等人。 （2004）来自印度尼西亚弗洛雷斯晚更新世的一种新的小体人参。自然431：1055-1061]。截然不同的解释是，这种材料不属于新的人类素类群，而是属于受小头畸形影响或不受其影响的现代小体人群。辩论主要集中在类型标本LB1的颅内腔的大小和形状上，而对其余LB1颅骨和颅骨后颅骨提供的形态学证据的关注较少，到目前为止，尚无研究解决该问题。缩放将如何影响像LB1这样的小型颅骨与现代人类更大的颅骨之间的形状比较。我们表明，无论是否考虑了颅骨小颅骨的影响，LB1颅骨的外部颅骨形态都无法容纳在正常的现代人类颅骨的大型全球样本中。而是通过多变量分析显示的LB1形状与现代人的形状明显不同，它与直立人相似，并且在较小程度上与人相似。我们的结果与假说相符，这些假说表明梁布亚（Liang Bua）标本代表的是与早期直立假单胞菌（H. erectus s）密切相关的小型人群。 l。从东非和/或Dmanisi或H. habilis。

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