Calvarial shape variation among Middle Pleistocene hominins: An application of surface scanning in palaeoanthropology

Abstract The increasing availability of 3D data and tools offers new analytical perspectives in palaeoanthropology, such as the quantitative testing of opposing phylogenetic scenarios. Using optical surface scan data and geometric morphometric techniques, this study explores calvarial shape variation in the “Middle Pleistocene muddle”. The morphological variability between H. erectus on the one hand and H. sapiens/neanderthalensis on the other has long remained obscure: opposing views have attributed the known specimens to any of the three species and possibly one or two more. A large number of landmarks and semilandmarks was extracted from the braincase and the face, in order to quantify the calvarial shape differences among species and key fossils. The results are incompatible with the hypothesis that H. rhodesiensis is the exclusive ancestor of H. sapiens, and offer only weak support for an exclusively European ancestor of Neandertals.

[1]  M. Dagosto,et al.  Mammalian evolutionary morphology : a tribute to Frederick S. Szalay , 2008 .

[2]  M W Marzke,et al.  A 3D quantitative comparison of trapezium and trapezoid relative articular and nonarticular surface areas in modern humans and great apes. , 2005, Journal of human evolution.

[3]  D. Lieberman,et al.  The evolution and development of cranial form in Homo sapiens , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[4]  I. Tattersall.  Species concepts and species identification in human evolution , 1992 .

[5]  G. P. Rightmire.  Middle and later Pleistocene hominins in Africa and Southwest Asia , 2009, Proceedings of the National Academy of Sciences.

[6]  F. Rohlf,et al.  A revolution morphometrics. , 1993, Trends in ecology & evolution.

[7]  I. Tattersall,et al.  The skull of “Sinanthropus” from Zhoukoudian, China: a new reconstruction , 1996 .

[8]  Philip L. F. Johnson,et al.  A Draft Sequence of the Neandertal Genome , 2010, Science.

[9]  F. Zonneveld,et al.  Linear measurements of cortical bone and dental enamel by computed tomography: applications and problems. , 1993, American journal of physical anthropology.

[10]  Robert Sitnik,et al.  Three-dimensional Image Capture and Applications 2008 , 2008 .

[11]  D. Kendall.  MORPHOMETRIC TOOLS FOR LANDMARK DATA: GEOMETRY AND BIOLOGY , 1994 .

[12]  Chris Stringer,et al.  Using genetic evidence to evaluate four palaeoanthropological hypotheses for the timing of Neanderthal and modern human origins. , 2010, Journal of human evolution.

[13]  Martin Friess,et al.  The study of craniofacial growth patterns using 3D laser scanning and geometric morphometrics , 2006, Electronic Imaging.

[14]  Gerhard W Weber,et al.  Principles for the virtual reconstruction of hominin crania. , 2009, Journal of human evolution.

[15]  W A Niewoehner,et al.  Behavioral inferences from the Skhul/Qafzeh early modern human hand remains , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[16]  M. Dagosto,et al.  Mammalian Evolutionary Morphology , 2008 .

[17]  Scott D Maddux,et al.  Allometric scaling of infraorbital surface topography in Homo. , 2009, Journal of human evolution.

[18]  David F. Wiley,et al.  Analysis of Selected Hominoid Joint Surfaces Using Laser Scanning and Geometric Morphometrics: A Preliminary Report , 2008 .

[19]  K. Butzer,et al.  After the Australopithecines : stratigraphy, ecology, and culture, change in the Middle Pleistocene , 1975 .

[20]  G. P. Rightmire,et al.  Human evolution in the Middle Pleistocene: The role of Homo heidelbergensis , 1998 .

[21]  A. Rosas,et al.  A hominid from the lower Pleistocene of Atapuerca, Spain: possible ancestor to Neandertals and modern humans. , 1997, Science.

[22]  Fred L Bookstein,et al.  Early modern human diversity suggests subdivided population structure and a complex out-of-Africa scenario , 2009, Proceedings of the National Academy of Sciences.

[23]  J. Myres.  International Congress of Anthropological and Ethnological Sciences , 1938, Nature.

[24]  J. Hublin.  The origin of Neandertals , 2009, Proceedings of the National Academy of Sciences.

[25]  J. Hublin,et al.  On the phylogenetic position of the pre-Neandertal specimen from Reilingen, Germany. , 1998, Journal of human evolution.