Discovery of Ancient Pelvis Reveals Development Clues
Indiana University scientists say that the discovery of a 1.2 million year old pelvis in Ethiopia has provided insights into the size of ancient newborns.
While the pelvis was dicovered back in 2001, analysis has only be completed in recent times. The size of the homo erectus female pelvic inlet is being taken as a measure of the size of newborns. Scientists have found that the birth canal is 30 percent larger than they would have expected.
This suggests that people in this age were capable of producing babies with larger neonatal brain sizes. It is not clear whether this provided any evolutionary advantage at this stage of our existence but that is a question that will be pondered as we attempt to find more such fossils over a range of periods.
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