Postnatal temporal bone ontogeny in Pan, Gorilla, and Homo, and the implications for temporal bone ontogeny in Australopithecus afarensis.
Postnatal temporal bone ontogeny in Pan, Gorilla, and Homo, and the implications for temporal bone ontogeny in Australopithecus afarensis.
复制标题
潘族、大猩猩和人属的出生后颞骨个体发育，以及对南方古猿阿法种颞骨个体发育的影响。
DOI：
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发表时间：
2013
影响因子：
2.8
通讯作者：
C. Lockwood
中科院分区：
文献类型：
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作者：
C. Terhune;W. Kimbel;C. Lockwood
对颞骨形态的评估在化石类群的分类学和系统发育评估中发挥了重要作用，最近对该地区的三维分析支持了颞骨用于测试分类学和系统发育假说的实用性。但是，尽管临床分析已经研究了人类颞骨个体发育的各个方面，但关于非人类类群中颞骨个体发育的文献较少。本研究旨在探讨非洲类人猿和人类在个体发育过程中颞骨形态变化的模式和轨迹的相关研究问题。我们进一步将这些数据应用于南方古猿颞骨个体发育的初步分析。三维地标是在智人、泛人猿、泛黑猩猩和大猩猩的个体发育系列标本上数字化的。使用几何形态计量学方法对数据进行分析，并比较个体发育过程中形状变化与大小的关系。这些分析的结果表明，尽管非洲猿类和人类的模式大致相似，但它们在颞骨的下颌窝和鼓室部分的发育方面表现出显著的差异。这些发现表明，在这些类群中，颞骨形状的出生后个体发育异速生长轨迹是不同的，而不是平行的。非洲大猩猩的颞骨形状随大小变化的模式显示出与人类的一些相似之处，但与现存的非洲类人猿，特别是大猩猩最为相似。
Assessments of temporal bone morphology have played an important role in taxonomic and phylogenetic evaluations of fossil taxa, and recent three-dimensional analyses of this region have supported the utility of the temporal bone for testing taxonomic and phylogenetic hypotheses. But while clinical analyses have examined aspects of temporal bone ontogeny in humans, the ontogeny of the temporal bone in non-human taxa is less well documented. This study examines ontogenetic allometry of the temporal bone in order to address several research questions related to the pattern and trajectory of temporal bone shape change during ontogeny in the African apes and humans. We further apply these data to a preliminary analysis of temporal bone ontogeny in Australopithecus afarensis. Three-dimensional landmarks were digitized on an ontogenetic series of specimens of Homo sapiens, Pan troglodytes, Pan paniscus, and Gorilla gorilla. Data were analyzed using geometric morphometric methods, and shape changes throughout ontogeny in relation to size were compared. Results of these analyses indicate that, despite broadly similar patterns, African apes and humans show marked differences in development of the mandibular fossa and tympanic portions of the temporal bone. These findings indicate divergent, rather than parallel, postnatal ontogenetic allometric trajectories for temporal bone shape in these taxa. The pattern of temporal bone shape change with size exhibited by A. afarensis showed some affinities to that of humans, but was most similar to extant African apes, particularly Gorilla.