期刊
NATURE
卷 487, 期 7405, 页码 90-93出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nature11185
关键词
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资金
- US National Science Foundation (NSF)
- Smithsonian Institution
- Institute for Human Evolution of the University of the Witwatersrand
- Max Planck Society
- US Department of State Fulbright Scholarship Program
- Malapa Project
- Leakey Foundation
- University of Colorado
- Palaeontological Scientific Trust, South Africa
- South African Department of Science and Technology
- Wenner-Gren Foundation
- Ray A. Rothrock Fellowship
- Texas AM University
- Gauteng Provincial Government
- South Africa National Research Foundation
- University of the Witwatersrand
Specimens of Australopithecus sediba from the site of Malapa, South Africa (dating from approximately 2 million years (Myr) ago)(1) present a mix of primitive and derived traits that align the taxon with other Australopithecus species and with early Homo(2). Although much of the available cranial and postcranial material of Au. sediba has been described(3-6), its feeding ecology has not been investigated. Here we present results from the first extraction of plant phytoliths from dental calculus of an early hominin. We also consider stable carbon isotope and dental microwear texture data for Au. sediba in light of new palaeoenvironmental evidence. The two individuals examined consumed an almost exclusive C-3 diet that probably included harder foods, and both dicotyledons (for example, tree leaves, fruits, wood and bark) and monocotyledons (for example, grasses and sedges). Like Ardipithecus ramidus (approximately 4.4 Myr ago) and modern savanna chimpanzees, Au. sediba consumed C-3 foods in preference to widely available C-4 resources. The inferred consumption of C-3 monocotyledons, and wood or bark, increases the known variety of early hominin foods. The overall dietary pattern of these two individuals contrasts with available data for other hominins in the region and elsewhere.
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