In 2010 a media frenzy over the fossilized bones of Australopithecus sediba occurred in conjunction with the publishing of the find in Science by a team of researchers led by Lee Berger.1 As background familiarization for this next installment in the Australopithecus sediba saga, the reader is referred to Australopithecus sediba no human ancestor.2 In the 9 September 2011 issue of Science a series of five articles on Australopithecus sediba was published, elaborating in more detail on specific aspects of last year’s study. Four of the papers dealt with anatomy, and a brief comment on each of these papers is included sequentially below. The other paper reported on the “refined dating” of sediments associated with the fossils, where the previous age estimate of the fossils (1.78 to 1.95 million years ago (Ma)) was conveniently replaced by an older date of 1.977 ± 0.002 Ma.3 The older date makes it more tenable from an evolutionary point of view to hold the position that Australopithecus sediba was the direct ancestor of the genus Homo. Whilst most evolutionists will no doubt accept this date, other creationists who have examined the method described in the paper to obtain the revised date note that “the whole process is quite circular, producing an attractive ‘precise’ date of completely unknown accuracy.”4

The endocast of MH1

The orbitofrontal cortex generally refers to the inferior surface of the frontal lobe of the brain. One of the most significant features of the virtual endocast of MH1 is that the shape of its orbitofrontal region is said to align more closely with human endocasts than comparison Australopithecus africanus endocasts, and so this is suggested as being indicative of neural reorganization towards the human condition.5 It should be pointed out that this suggested neural reorganization had nothing to do with brain size, as with a cranial capacity of about 420 cm3 the brain of Australopithecus sediba was at the low end of the australopithecine range, and only slightly larger than the mean chimpanzee brain….

Continue Reading on