Ilyanna
moral imperfection
From the University of Zurich
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News release, May 08, 2012
Typically human brain development older than first thought
A large neonate brain, rapid brain growth and large frontal lobes are the typical hallmarks of human brain development. These appeared much earlier in the hominin family tree than was originally thought, as anthropologists from the University of Zurich who re-examined the Taung child’s fossil cranial sutures and compared them with other fossil skulls now prove. The late fusion of the cranial sutures in the Taung child is also found in many other members of the Australopithecus africanus species and the earliest examples of the Homo genus.
As the researchers now demonstrate using computer-imaging comparisons of fossil crania, the late fusion of the metopic suture in the Taung child is not unique in fossils. It is also found in many other members of the species Australopithecus africanus, not to mention the earliest examples of our Homo genus. The three typical hallmarks of human brain development – a large neonate brain, rapid brain growth and large frontal lobes – therefore appeared much earlier in the hominin family tree than was originally thought.