Human evolution; "Little foot's" brain (Introduction)

by dhw, Thursday, December 20, 2018, 10:19 (1947 days ago) @ David Turell

QUOTE: The study also has shown that the vascular system in Australopithecus was more complex than previously thought, which raises new questions on the metabolism of the brain at this time. This might be consistent with a previous hypothesis suggesting that the endocranial vascular system in Australopithecus was closer to modern humans than it was in the geologically younger Paranthropus genus. (David’s bold)

DAVID: But note my bold about the somewhat advanced vascular system. Advanced planning by God?

dhw: If so, then why would he have bothered to introduce the less advanced system later on?

DAVID: We don't have Lucy's skull which would have been later . Where did you get observation? The article indicates an improvement from Paranthropus.

The section you bolded indicates that the system of the older hominin (Australopithecus) was closer to ours than that of the younger hominin (Paranthropus).