hard-object feeding in sooty mangabeys (cercocebus atys) and interpretation of early hominin feeding ecology在乌白眉猴坚硬物体喂养(cercocebus atys)和早期古人类摄食生态的解释.pdfVIP

Hard-Object Feeding in Sooty Mangabeys (Cercocebus atys) and Interpretation of Early Hominin Feeding Ecology 1 2 3 1 4 David J. Daegling *, W. Scott McGraw , Peter S. Ungar , James D. Pampush , Anna E. Vick , E. Anderson Bitty5 1 Department of Anthropology, University of Florida, Gainesville, Florida, United States of America, 2 Department of Anthropology, The Ohio State University, Columbus, Ohio, United States of America, 3 Department of Anthropology, University of Arkansas, Fayetteville, Arkansas, United States of America, 4 Department of Social and ´ ˆ Behavioral Sciences, Santa Fe College, Gainesville, Florida, United States of America, 5 Laboratoire de Zoologie, Universite d’Abidjan-Cocody, Abidjan, Cote d’Ivoire Abstract Morphology of the dentofacial complex of early hominins has figured prominently in the inference of their dietary adaptations. Recent theoretical analysis of craniofacial morphology of Australopithecus africanus proposes that skull form in this taxon represents adaptation to feeding on large, hard objects. A modern analog for this specific dietary specialization is provided by the West African sooty mangabey, Cercocebus atys. This species habitually feeds on the large, exceptionally hard nuts of Sacoglottis gabonensis, stereotypically crushing the seed casings using their premolars and molars. This type of behavior has been inferred for A. africanus based on mathematical stress analysis and aspects of dental wear and morphology. While postcanin