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• W3195819052 endingPage "20200085" @default.
• W3195819052 startingPage "20200085" @default.
• W3195819052 abstract "Diet is a driving force in human evolution. Two species of Plio-Pleistocene hominins, Paranthropus robustus and Australopithecus africanus, have derived craniomandibular and dental morphologies which are often interpreted as P. robustus having a more biomechanically challenging diet. While dietary reconstructions based on dental microwear generally support this, they show extensive dietary overlap between species, and craniomandibular and dental biomechanical analyses can yield contradictory results. Using methods from anthropology and engineering (i.e. anthroengineering), we quantified the molar biomechanical performance of these hominins to investigate possible dietary differences between them. Thirty-one lower second molars were 3D printed and used to fracture gelatine blocks, and Bayesian generalized linear models were used to investigate the relationship between species and tooth wear, size and shape, and biomechanical performance. Our results demonstrate that P. robustus required more force and energy to fracture blocks but had a higher force transmission rate. Considering previous dietary reconstructions, we propose three evolutionary scenarios concerning the dietary ecologies of these hominins. These evolutionary scenarios cannot be reached by investigating morphological differences in isolation, but require combining several lines of evidence. This highlights the need for a holistic approach to reconstructing hominin dietary ecology." @default.
• W3195819052 created "2021-08-30" @default.
• W3195819052 creator A5009521190 @default.
• W3195819052 creator A5066384922 @default.
• W3195819052 date "2021-08-13" @default.
• W3195819052 modified "2023-09-24" @default.
• W3195819052 title "Molar biomechanical function in South African hominins<i>Australopithecus africanus</i>and<i>Paranthropus robustus</i>" @default.
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