Comparing frontal cranial profiles in archaic and modern <I>Homo</I> by morphometric analysis Export

@article{citeulike:2617986, abstract = {Archaic and modern human frontal bones are known to be quite distinct externally, by both conventional visual and metric evaluation. Internally this area of the skull has been considerably less well-studied. Here we present results from a comparison of interior, as well as exterior, frontal bone profiles from CT scans of five mid-Pleistocene and Neanderthal crania and 16 modern humans. Analysis was by a new morphometric method, Procrustes analysis of semi-landmarks, that permits the statistical comparison of curves between landmarks. As expected, we found substantial external differences between archaic and modern samples, differences that are mainly confined to the region around the brow ridge. However, in the inner median-sagittal profile, the shape remained remarkably stable over all 21 specimens. This implies that no significant alteration in this region has taken place over a period of a half-million years or more of evolution, even as considerable external change occurred within the hominid clade spanning several species. This confirms that the forms of the inner and outer aspects of the human frontal bone are determined by entirely independent factors, and further indicates unexpected stability in anterior brain morphology over the period during which modern human cognitive capacities emerged. Anat Rec (New Anat): 257:217-224, 1999. {\copyright} 1999 Wiley-Liss, Inc.}, author = {Bookstein, Fred and Sch\"{a}fer, Katrin and Prossinger, Hermann and Seidler, Horst and Fieder, Martin and Stringer, Chris and Weber, Gerhard W. and Arsuaga, Juan-Luis and Slice, Dennis E. and Rohlf, James F. and Recheis, Wolfgang and Mariam, Ato J. and Marcus, Leslie F.}, citeulike-article-id = {2617986}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/(SICI)1097-0185(19991215)257:6%3C217::AID-AR7%3E3.0.CO;2-W}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/68504006/ABSTRACT}, doi = {10.1002/(SICI)1097-0185(19991215)257:6%3C217::AID-AR7%3E3.0.CO;2-W}, journal = {The Anatomical Record}, keywords = {analysis, anatomy, bone, comparative, computed, evolution, fossil, frontal, heidelbergensis, homo, human, imaging, neanderthals, procrustes, sapiens, tomography}, number = {6}, pages = {217--224}, posted-at = {2008-04-01 01:09:43}, priority = {2}, title = {Comparing frontal cranial profiles in archaic and modern <I>Homo</I> by morphometric analysis}, url = {http://dx.doi.org/10.1002/(SICI)1097-0185(19991215)257:6%3C217::AID-AR7%3E3.0.CO;2-W}, volume = {257}, year = {1999} }

TY - JOUR ID - citeulike:2617986 L3 - citeulike-article-id:2617986 N2 - Archaic and modern human frontal bones are known to be quite distinct externally, by both conventional visual and metric evaluation. Internally this area of the skull has been considerably less well-studied. Here we present results from a comparison of interior, as well as exterior, frontal bone profiles from CT scans of five mid-Pleistocene and Neanderthal crania and 16 modern humans. Analysis was by a new morphometric method, Procrustes analysis of semi-landmarks, that permits the statistical comparison of curves between landmarks. As expected, we found substantial external differences between archaic and modern samples, differences that are mainly confined to the region around the brow ridge. However, in the inner median-sagittal profile, the shape remained remarkably stable over all 21 specimens. This implies that no significant alteration in this region has taken place over a period of a half-million years or more of evolution, even as considerable external change occurred within the hominid clade spanning several species. This confirms that the forms of the inner and outer aspects of the human frontal bone are determined by entirely independent factors, and further indicates unexpected stability in anterior brain morphology over the period during which modern human cognitive capacities emerged. Anat Rec (New Anat): 257:217-224, 1999. © 1999 Wiley-Liss, Inc. IS - 6 JF - The Anatomical Record EP - 224 TI - Comparing frontal cranial profiles in archaic and modern <I>Homo</I> by morphometric analysis VL - 257 SP - 217 KW - analysis KW - anatomy KW - bone KW - comparative KW - computed KW - evolution KW - fossil KW - frontal KW - heidelbergensis KW - homo KW - human KW - imaging KW - neanderthals KW - procrustes KW - sapiens KW - tomography AU - Bookstein, Fred AU - Schäfer, Katrin AU - Prossinger, Hermann AU - Seidler, Horst AU - Fieder, Martin AU - Stringer, Chris AU - Weber, Gerhard AU - Arsuaga, Juan-Luis AU - Slice, Dennis AU - Rohlf, James AU - Recheis, Wolfgang AU - Mariam, Ato AU - Marcus, Leslie PY - 1999/// UR - http://dx.doi.org/10.1002/(SICI)1097-0185(19991215)257:6%3C217::AID-AR7%3E3.0.CO;2-W ER -