Wits Evolutionary Studies Institute (ESI)

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    Small-bodied humans from Palau, Micronesia.
    (Public Library of Science, 2008-03-12) Berger, L.R.; De Klerk, B.; Quinn, R.L.; Churchill, S.E.
    Newly discovered fossil assemblages of small bodied Homo sapiens from Palau, Micronesia possess characters thought to be taxonomically primitive for the genus Homo. Background: Recent surface collection and test excavation in limestone caves in the the rock islands of Palau, Micronesia, has produced a sizeable sample of human skeletal remains dating roughly between 940-2890 cal ybp. Principle Findings: Preliminary analysis indicates that this material is important for two reasons. First, Individuals from the older time horizons are small in body size even relative to "pygmoid" populations from Southeast Asia and Indonesia, and thus may represent a marked case of human insular dwarfism. Second, while possessing a number of derived features that align them with Homo sapiens, the human remains from Palau also exhibit several skeletal traits that are considered to be primitive for the genus Homo. Significance. These features may be previously unrecognized developmental correlates of small body size and, if soo, they may have important implications for interpreting the taxonomic affinities of fossil specimens of Homo.
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    Papio cranium from the hominin-bearing site of Malapa: Implications for the evolution of modern baboon cranial morphology and South African Plio-Pleistocene biochronology.
    (Public Library of Science, 2015-08-19) Gilbert, C.C.; Steininger, C.M.; Kibii, J.M.; Berger, L.R.
    A new partial cranium (UW 88-886) of the Plio-Pleistocene baboon Papio angusticeps from Malapa is identified, described and discussed. UW 88-886 represents the only non-hominin primate yet recovered from Malapa and is important both in the context of baboon evolution as well as South African hominin site biochronology. The new specimen may represent the first appearance of modern baboon anatomy and coincides almost perfectly with molecular divergence date estimates for the origin of the modern P. hamadryas radiation. The fact that the Malapa specimen is dated between ~2.026–2.36 million years ago (Ma) also has implications for the biochronology of other South African Plio-Pleistocene sites where P. angusticeps is found.