The origin of <italic>Homo floresiensis</italic> and its relation to evolutionary processes under isolation

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  • LYRAS G.A.
    Museum of Paleontology and Geology, Faculty of Geology, National and Kapodistrian University of Athens, Athens
  • DERMITZAKIS M.D.
    Museum of Paleontology and Geology, Faculty of Geology, National and Kapodistrian University of Athens, Athens
  • VAN DER GEER A.A.E.
    Museum of Paleontology and Geology, Faculty of Geology, National and Kapodistrian University of Athens, Athens
  • VAN DER GEER S.B.
    Pulsar Physics, Eindhoven
  • DE VOS J.
    National Museum of Natural History Naturalis, Leiden

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  • The origin of Homo floresiensis and its relation to evolutionary processes under isolation

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Since its first description in 2004, Homo floresiensis has been attributed to a species of its own, a descendant of H. erectus or another early hominid, a pathological form of H. sapiens, or a dwarfed H. sapiens related to the Neolithic inhabitants of Flores. In this contribution, we apply a geometric morphometric analysis to the skull of H. floresiensis (LB1) and compare it with skulls of normal H. sapiens, insular H. sapiens (Minatogawa Man and Neolithic skulls from Flores), pathological H. sapiens (microcephalics), Asian H. erectus (Sangiran 17), H. habilis (KNM ER 1813), and Australopithecus africanus (Sts 5). Our analysis includes specimens that were highlighted by other authors to prove their conclusions. The geometric morphometric analysis separates H. floresiensis from all H. sapiens, including the pathological and insular forms. It is not possible to separate H. floresiensis from H. erectus. Australopithecus falls separately from all other skulls. The Neolithic skulls from Flores fall within the range of modern humans and are not related to LB1. The microcephalic skulls fall within the range of modern humans, as well as the skulls of the Neolithic small people of Flores. The cranial shape of H. floresiensis is close to that of H. erectus and not to that of any H. sapiens. Apart from cranial shape, some features of H. floresiensis are not unique but are shared with other insular taxa, such as the relatively large teeth (shared with Early Neolithic humans of Sardinia), and changed limb proportions (shared with Minatogawa Man).<br>

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