Taung Child: Another Evidence [Proof] of Evolution Falls

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Here is a quick description from the Smithsonian Institute’s site about Taung:

When this 3-year-old child’s skull was found in 1924, it was among the first early human fossils to be found in Africa — and the first early human fossil discovery to draw major attention to this region as a place of origin of the human family tree. Still, it took over 20 years after that before scientists accepted the importance of Africa as a major source of human evolution.

The Taung Child’s fossilized anatomy represented the first time researchers saw evidence of early human upright, two-legged  (bipedal) walking. The evidence was the position of the Taung Child’s foramen magnum, or the hole through which the spinal cord connects with the brain. This spinal cord hole is positioned toward the front of the Taung Child’s skull, a characteristic associated with bipedal locomotion. This bipedal adaptation allows the head to balance atop of the neck; while contrastingly, a four-legged ape has its foramen magnum positioned toward the rear of the head to keep its eyes facing forward (and not down) when it moves.

And here is more from Science Daily, the cites where Creation magazine references:

Summary: By subjecting the skull of the famous Taung Child to the latest CT scan technology, researchers are now casting doubt on theories that Australopithecus africanus shows the same cranial adaptations found in modern human infants and toddlers.

The Taung Child, South Africa’s premier hominin discovered 90 years ago by Wits University Professor Raymond Dart, continues to shed light on human origins. By subjecting the skull of the first australopith discovered to the latest technologies in the Wits University Microfocus X-ray Computed Tomography (CT) facility, researchers are now casting doubt on theories that Australopithecus africanus shows the same cranial adaptations found in modern human infants and toddlers — in effect disproving current support for the idea that this early hominin shows infant brain development in the prefrontal region similar to that of modern humans.

The results have been published online in the Proceedings of the National Academy of Sciences (PNAS) on Aug. 25, in an article titled “New high resolution CT data of the Taung partial cranium and endocast and their bearing on metopism and hominin brain evolution.”

The Taung Child has historical and scientific importance in the fossil record as the first and best example of early hominin brain evolution, and theories have been put forward that it exhibits key cranial adaptations found in modern human infants and toddlers.

To test the ancientness of this evolutionary adaptation, Dr Kristian J. Carlson, Senior Researcher from the Evolutionary Studies Institute at the University of the Witwatersrand, and colleagues, Professor Ralph L. Holloway from Columbia University and Douglas C. Broadfield from Florida Atlantic University, performed an in silico dissection of the Taung fossil using high-resolution computed tomography.

“A recent study has described the roughly 3 million-year-old fossil, thought to have belonged to a 3 to 4-year-old, as having a persistent metopic suture and open anterior fontanelle, two features that facilitate post-natal brain growth in human infants when their disappearance is delayed,” said Carlson.

Comparisons with the existing hominin fossil record and chimpanzee variation do not support this evolutionary scenario.

Citing deficiencies in how the Taung fossil material has been recently assessed, the researchers suggest physical evidence does not incontrovertibly link features of the Taung skull, or its endocast, to early prefrontal lobe expansion, a brain region implicated in many human behaviors.

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