162,862 research outputs found
Dutour O., Hublin J.-J, Vandermeersch B. Origine et évolution des populations humaines
No full textZeitoun Valéry. Dutour O., Hublin J.-J, Vandermeersch B. Origine et évolution des populations humaines. In: Bulletin de la Société préhistorique française, tome 103, n°2, 2006. pp. 406-409
С. Cohen et J.-J. Hublin, Boucher de Perthes : les origines romantiques de la préhistoire (Paris : Belin, 1989),
No full textС. Cohen et J.-J. Hublin, Boucher de Perthes : les origines romantiques de la préhistoire (Paris : Belin, 1989),. In: Revue d'histoire des sciences, tome 44, n°3-4, 1991. pp. 496-497
С. Cohen et J.-J. Hublin, Boucher de Perthes : les origines romantiques de la préhistoire (Paris : Belin, 1989),
No full textС. Cohen et J.-J. Hublin, Boucher de Perthes : les origines romantiques de la préhistoire (Paris : Belin, 1989),. In: Revue d'histoire des sciences, tome 44, n°3-4, 1991. pp. 496-497
3D enamel thickness in Neandertals and Homo sapiens permanent lower canines
No full textOver the last decades, the growing support of 3D data has led to develop comparative morphometric and qualitative methods to
increase the number of fossils suitable for more comprehensive dental analysis [1]. Enamel thickness figures prominently in studies
of human evolution, particularly with hominoid taxonomy, phylogeny, and paleodiet [2, 3]. Attention has focused on molar
teeth, recently utilising advanced technologies with novel protocols [3]. Despite important results achieved thus far, further work
is needed to investigate all tooth classes. We apply a recent approach developed for anterior teeth [4] to investigate 3D enamel
thickness of hominin canines. MicroCT data of 38 unworn/lightly worn Homo sapiens (Early: n= 4; Upper Paleolithic: n=4; Recent:
n=21) and Neandertal (n=9) permanent lower canines were segmented using Avizo 7 to reconstruct 3D digital models of the
teeth. The cervical line was digitized on each 3D model using the spline function in Rapidform XOR to separate crown from root
dentine. Volumes of enamel and of crown dentine, and the enamel-dentine junction surface were measured to compute Relative
Enamel Thickness (RET). Mean RET value for Neandertals (12.7±1.8) falls below the mean computed for H. sapiens (Upper Paleolithic=
15.6±2.9; Early=14.0±1.9; Recent=15.5±2.6). Results of the permutation test between Neandertal and recent humans
support the significant difference in RET (p=0.0055), a useful index for the taxonomic discrimination between modern humans
and Neandertals. This preliminary study confirms this trend for lower permanent canines [2], using a 3D protocol which is reproducible,
has little subjectivity, and is particularly effective for the uneven contour of cervical enamel in anterior teeth. In recent
literature, although the majority of datasets are based on micro-CT scans, the analysis of dental tissues in Neandertal and H. sapiens
permanent lower canines have been performed on virtual longitudinal sections [2, 5]. Our preliminary 3D analysis of permanent
lower canines support the general findings that Neandertal have thinner enamel than H. sapiens, as observed in molars. Future
contributions will incorporate increased sample sizes and include worn teeth to investigate whether the RET index continues to
discriminate between Neandertal and H. sapiens canines.
Acknowledgements: We thank all the curators and collaborators that granted us access to the dental material and the CT-operators
at MPI-EVA.
References:[1] Le Cabec, A., Tang, N., Tafforeau, P., 2015. Accessing Developmental Information of Fossil Hominin Teeth
Using New Synchrotron-Microtomography Based Visualization Techniques of Dental Surfaces and Interfaces. PLoS ONE 10(4):
e0123019. doi:10.1371/journal.pone.0123019[2] Smith, T.M., Olejniczak, A.J., Zermeno, J.P., Tafforeau, P., Skinner, M.M.,
Hoffmann, A., Radovcic, J., Toussaint, M., Kruszynski, R., Menter, C., Moggi- Cecchi, J., Glasmacher, U.A., Kullmer, O.,
Schrenk, F., Stringer, C., Hublin, J.-J., 2012. Variation in enamel thickness within the genus Homo. J. Hum. Evol. 62,395e411.[3]
Olejniczak, A.J., Smith, T.M., Feeney, R.N.M., Macchiarelli, R., Mazurier, A.,Bondioli, L., Rosas, A., Fortea, J., de la Rasilla, M.,
Garcia-Tabernero, A., Radovcic, J., Skinner, M.M., Toussaint, M., Hublin, J.-J., 2008. Dental tissue proportions and enamel
thickness in Neandertal and modern human molars. J. Hum. Evol. 55, 12e23.[4] Benazzi, S., Panetta, D., Fornai, C., Toussaint,
M., Gruppioni, G., Hublin, J-J., 2014. Technical Note: Guidelines for the digital computation of 2D and 3D enamel thickness in
hominoid teeth. Am. J. Phys. Anthropol. 2014 Feb;153(2):305-13.[5] Feeney, R.N.M., Zermeno, J.P., Reid, D.J., Nakashima, S.,
Sano, H., Bahar, A., Hublin, J-J., Smith, T.S., 2010. ’Enamel thickness in Asian human canines and premolars’. Anthrop. Sci., 118
(3):191-198
Bulletins et Mémoires de la Société d'anthropologie de Paris, tome I, n° 3-4, 1989. Numéro spécial «Histoire de l'anthropologie : hommes, idées, moments» (sous la direction de Cl. Blanckaert, A. Ducros, J. J. Hublin)
No full textLenclud Gérard. Bulletins et Mémoires de la Société d'anthropologie de Paris, tome I, n° 3-4, 1989. Numéro spécial «Histoire de l'anthropologie : hommes, idées, moments» (sous la direction de Cl. Blanckaert, A. Ducros, J. J. Hublin) . In: Gradhiva : revue d'histoire et d'archives de l'anthropologie, n°10, 1991. pp. 100-103
How could the modern human succeed over other hominids? [Latest Thinking]
No full textModern humans colonized the whole planet and replaced all other hominids, such as Neanderthals. This evolvement raises interesting evolutionary questions concerning both species. The paleoanthropological research presented in this video looks at a moment in time when both co-existed. In order to find out about the differences between them, JEAN-JACQUES HUBLIN looks at both species’ use of technology, behavior, and social organization using molecular screening techniques and archeological research. While it has often been argued that the replacement of Neanderthals by the modern human occurred due to the modern human’s strong evolutionary superiority, this research counters that precisely because they once co-existed, Neanderthals must be more complex than previously assumed
Bulletins et Mémoires de la Société d'Anthropologie de Paris, n.s., 1989, I (3-4), n° spéc. : Histoire de l'anthropologie : hommes idées, moments. S. dir. C. Blanckaert, A. Ducros & J.-J. Hublin
No full textMasset Claude. Bulletins et Mémoires de la Société d'Anthropologie de Paris, n.s., 1989, I (3-4), n° spéc. : Histoire de l'anthropologie : hommes idées, moments. S. dir. C. Blanckaert, A. Ducros & J.-J. Hublin. In: L'Homme, 1992, tome 32 n°121. Anthropologie du proche. pp. 238-239
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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