Endocranial capacity in an early hominid cranium from Sterkfontein, South Africa.
Endocranial capacity in an early hominid cranium from Sterkfontein, South Africa.
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来自南非斯特克方丹的早期原始人颅骨的内分泌能力。
作者：
Glenn C. Conroy;Gerhard W. Weber;Horst Seidler
二维和三维计算机成像显示，来自南非斯泰克方丹的一个大约 2.8 至 260 万年前的早期原始人颅骨 (Stw 505)（暂定属于非洲南方古猿）的颅内容量约为 515 立方厘米。虽然这是该物种有记录的最大颅内容量，但仍明显低于传闻中的颅内容量超过 600 立方厘米。没有一种南方古猿的颅骨容量接近、更不用说超过 600 立方厘米。目前接受的一些对早期原始人类内分泌能力的估计可能被夸大了，这表明早期原始人类大脑进化的节奏和模式可能需要重新评估。
Two- and three-dimensional computer imaging shows that endocranial capacity in an approximately 2.8- to 2.6-million-year-old early hominid cranium (Stw 505) from Sterkfontein, South Africa, tentatively assigned to Australopithecus africanus, is approximately 515 cubic centimeters. Although this is the largest endocranial capacity recorded for this species, it is still markedly less than anecdotal reports of endocranial capacity exceeding 600 cubic centimeters. No australopithecine has an endocranial capacity approaching, let alone exceeding, 600 cubic centimeters. Some currently accepted estimates of early hominid endocranial capacity may be inflated, suggesting that the tempo and mode of early hominid brain evolution may need reevaluation.