Posterior maxillary (PM) plane and anterior cranial architecture in primates Export

@article{citeulike:2618286, abstract = {This study tests several hypotheses of integration between the cranial base and face in primates. After reviewing the definition and anatomical basis for the posterior maxillary (PM) plane, which demarcates the back of the midface at its junction with the sphenoid, we demonstrate how the PM plane can be identified accurately on radiographs, and confirm that it maintains a 90° angle relative to the Neutral Horizontal Axis of the orbits in all primates. In addition, we use the PM plane to test Dabelow's () hypothesis that the orbits and anterior cranial base are more highly integrated in anthropoids than in strepsirrhines, and we test the hypothesis that the midline anterior cranial base (planum sphenoideum) and anterior cranial floor (planum sphenoideum plus cribriform plate) in primates are highly correlated with each other relative to the PM plane. The mean angle between the anterior cranial base and the PM plane does not differ significantly from 90° in anthropoids, but differs significantly in strepsirrhines. The anterior cranial base and anterior cranial floor, however, correlate well with each other relative to the PM plane in both suborders of primates, independent of orbital orientation and configuration. The PM plane, anterior cranial base, and anterior cranial floor, therefore, form an integrated structural complex, a}, address = {Doctoral Program in Hominid Paleobiology, The George Washington University, Washington, DC 20052; Department of Anthropology, Harvard University, Cambridge, MA 02138}, author = {Mccarthy, Robert C. and Lieberman, Daniel E.}, citeulike-article-id = {2618286}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/ar.1167}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/85514736/ABSTRACT}, doi = {10.1002/ar.1167}, journal = {The Anatomical Record}, keywords = {axis, block, facial, horizontal, integration, maxillary, neutral, plane, pm, posterior}, number = {3}, pages = {247--260}, posted-at = {2008-04-01 02:32:26}, priority = {2}, title = {Posterior maxillary (PM) plane and anterior cranial architecture in primates}, url = {http://dx.doi.org/10.1002/ar.1167}, volume = {264}, year = {2001} }

TY - JOUR ID - citeulike:2618286 L3 - citeulike-article-id:2618286 N2 - This study tests several hypotheses of integration between the cranial base and face in primates. After reviewing the definition and anatomical basis for the posterior maxillary (PM) plane, which demarcates the back of the midface at its junction with the sphenoid, we demonstrate how the PM plane can be identified accurately on radiographs, and confirm that it maintains a 90° angle relative to the Neutral Horizontal Axis of the orbits in all primates. In addition, we use the PM plane to test Dabelow's () hypothesis that the orbits and anterior cranial base are more highly integrated in anthropoids than in strepsirrhines, and we test the hypothesis that the midline anterior cranial base (planum sphenoideum) and anterior cranial floor (planum sphenoideum plus cribriform plate) in primates are highly correlated with each other relative to the PM plane. The mean angle between the anterior cranial base and the PM plane does not differ significantly from 90° in anthropoids, but differs significantly in strepsirrhines. The anterior cranial base and anterior cranial floor, however, correlate well with each other relative to the PM plane in both suborders of primates, independent of orbital orientation and configuration. The PM plane, anterior cranial base, and anterior cranial floor, therefore, form an integrated structural complex, a IS - 3 JF - The Anatomical Record AD - Doctoral Program in Hominid Paleobiology, The George Washington University, Washington, DC 20052; Department of Anthropology, Harvard University, Cambridge, MA 02138 EP - 260 TI - Posterior maxillary (PM) plane and anterior cranial architecture in primates VL - 264 SP - 247 KW - axis KW - block KW - facial KW - horizontal KW - integration KW - maxillary KW - neutral KW - plane KW - pm KW - posterior AU - Mccarthy, Robert AU - Lieberman, Daniel PY - 2001/// UR - http://dx.doi.org/10.1002/ar.1167 ER -