Abstract:
:Australopithecus sediba has been hypothesized to be a close relative of the genus Homo. Here we show that MH1, the type specimen of A. sediba, was not optimized to produce high molar bite force and appears to have been limited in its ability to consume foods that were mechanically challenging to eat. Dental microwear data have previously been interpreted as indicating that A. sediba consumed hard foods, so our findings illustrate that mechanical data are essential if one aims to reconstruct a relatively complete picture of feeding adaptations in extinct hominins. An implication of our study is that the key to understanding the origin of Homo lies in understanding how environmental changes disrupted gracile australopith niches. Resulting selection pressures led to changes in diet and dietary adaption that set the stage for the emergence of our genus.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Ledogar JA,Smith AL,Benazzi S,Weber GW,Spencer MA,Carlson KB,McNulty KP,Dechow PC,Grosse IR,Ross CF,Richmond BG,Wright BW,Wang Q,Byron C,Carlson KJ,de Ruiter DJ,Berger LR,Tamvada K,Pryor LC,Berthaume MA,Strait DSdoi
10.1038/ncomms10596subject
Has Abstractpub_date
2016-02-08 00:00:00pages
10596issn
2041-1723pii
ncomms10596journal_volume
7pub_type
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