Análises filogenéticas baseadas em distâncias expandidas da evolução do formato de crânio fóssil de Homo

terça-feira, janeiro 05, 2016

Expanded Distance-based Phylogenetic Analyses of Fossil Homo Skull Shape Evolution

Peter J. Waddell

(Submitted on 30 Dec 2015)

Source/Fonte: John Hawk's blog

Analyses of a set of 47 fossil and 4 modern skulls using phylogenetic geometric morphometric methods corroborate and refine earlier results. These include evidence that the African Iwo Eleru skull, only about 12,000 years old, indeed represents a new species of near human. In contrast, the earliest known anatomically modern human skull, Qafzeh 9, the skull of Eve from Israel/Palestine, is validated as fully modern in form. Analyses clearly show evidence of archaic introgression into Gravettian, pre_Gravettian, Qafzeh, and Upper Cave (China) populations of near modern humans, and in about that order of increasing archaic content. The enigmatic Saldahna (Elandsfontein) skull emerges as a probable first representative of that lineage, which exclusive of Neanderthals that, eventually lead to modern humans. There is also evidence that the poorly dated Kabwe (Broken Hill) skull represents a much earlier distinct lineage. The clarity of the results bode well for quantitative statistical phylogenetic methods making significant inroads in the stalemates of paleoanthropology.

Subjects: Populations and Evolution (q-bio.PE); Genomics (q-bio.GN); Quantitative Methods (q-bio.QM)

Cite as: arXiv:1512.09115 [q-bio.PE]

(or arXiv:1512.09115v1 [q-bio.PE] for this version)

Submission history

From: Peter Waddell [view email

[v1] Wed, 30 Dec 2015 20:45:38 GMT (739kb)