By Richard E. Leakey (auth.), Frederick E. Grine, John G. Fleagle, Richard E. Leakey (eds.)

This quantity addresses the starting place of the human genus Homo, a big transition in human evolution and linked to significant adjustments in mind dimension, locomotion, and tradition, yet one with many unanswered questions. what number assorted species of Homo have been there, and the way have been they interrelated? Are stone instruments a attribute of early Homo? What was once their functionality? How does using stone instruments relate to adjustments within the dentition and mind dimension? Did diversifications for lengthy distance operating first seem with the foundation of this genus? How does this relate to its vitamin and cultural abilities.

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Extra info for The First Humans – Origin and Early Evolution of the Genus Homo : Contributions from the Third Stony Brook Human Evolution Symposium and Workshop October 3 – October 7, 2006

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Tobias, 1987; Falk, 1992; Stanley, 1992; Aiello and Wheeler, 1995; Bramble and Lieberman, 2004). If we grant that the co-occurrence of encephalization, stone tools and paleontological evidence for meat consumption is functionally meaningful, is it reasonable to take these presumptively derived differences between Homo and the australopiths as explanatory of the origin of the lineage leading to modern humans? E. Grine et al. V. 2009 31 32 great ape ancestor. In both cases, the absence of the chronicle of events – the lack of a fossil record – reduces explanation to projecting the linkage of particular anatomical and behavioral characters in descendants backwards in time to hypothetical ancestors.

Erectus was found to have had a pattern of brain growth that was more ape-like than modern human-like (but see Robson and Wood, 2008 for a discussion of the basis for these conclusions). A number of recent studies have examined development in H. , 2006), and these studies suggest that the enamel formation rates of the anterior teeth of Neanderthals were faster than those in H. sapiens, but subsequent studies of the development of Neanderthal postcanine teeth suggests that the developmental timing of H.

Sapiens) and (early African H. erectus, H. habilis sensu stricto, H. rudolfensis, H. sapiens) were supported by more than 70% of the replicates. Similar results were obtained when only the 109 qualitative characters were included. Thus, while Strait and Grine’s (2004) parsimony analyses support the hypothesis that Homo is a monophylum, this hypothesis is not consistently supported by their bootstrap analyses. The results of the three latest cladistic analyses thus differ with respect to the phylogenetic relationships of H.

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