脑,骨盆,手和脚。
The brain itself does not fossilise, but the inside of the cranium retains an impression of itscontours.
脑部分本身是不会变成化石的,但在头盖骨内部却还保留着脑的轮廓。
The researchers mapped these with high-powered X-ray beams to create athree-dimensional model of the surface of sediba s brain.
研究人员借助高功率X射线,描绘出了源泉种脑表面的三维模型。
They found that its size was on a par with other australopithecines,
他们发现源泉种的脑尺寸与其它南猿一样,
but its shape was more like that of a human brain.
但是其形状则更像人类的大脑。
Specifically, the frontal lobes, which are the seat in modern humans of higher cognitivefunctions such as abstract reasoning,
特别是大脑前庭部分,它使现代人具有较高的认知能力例如抽象推理的能力,
looked more humanlike in sediba s brain than they do in the brains of otheraustralopithecines.
而相比较南猿来说,源泉种的大脑前庭更像人类。
That suggests the neurological changes which gave rise to humanity may have predated thebrain s expansionan event that had, hitherto, been regarded as crucial to theemergence of humans.
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