A morphometric mapping analysis of lower fourth deciduous premolar in hominoids: Implications for phylogenetic relationship between Nakalipithecus and Ouranopithecus.
A morphometric mapping analysis of lower fourth deciduous premolar in hominoids: Implications for phylogenetic relationship between Nakalipithecus and Ouranopithecus.
复制标题
类人猿下第四乳牙前磨牙的形态测绘分析：对 Nakalipithecus 和 Ouranopithecus 之间系统发育关系的影响。
DOI：
10.1016/j.crpv.2016.10.004
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发表时间：
2017
影响因子：
1.1
通讯作者：
M. Nakatsukasa
中科院分区：
文献类型：
--
作者：
W. Morita;N. Morimoto;Y. Kunimatsu;A. Mazurier;C. Zanolli;M. Nakatsukasa
澄清非洲和欧亚大陆的原始人在中新世的形态变化是特别重要的推断人类和类人猿的进化历史。在中新世人科中，中古猿和欧拉古猿因其在不同大陆的相似年代而起着重要的作用。在这里，我们量化的低第四乳前磨牙（DP4）内部形态的现存和灭绝的人科动物使用的方法形态测量映射和检查这两个化石类群之间的系统发育关系。我们的数据表明，晚中新世早期的类人猿代表了一个原始的状态，而现代的类人猿和人类代表了派生的状态。中古猿和乌拉古猿的dp4在形态上有一定的相似性，但中古猿的dp4保留了原始的特征，乌拉古猿的dp4则表现出衍生的特征。从中新世到上新世-更新世非洲猿化石之间的表型连续性支持非洲猿和人类的非洲起源（AAH）。这一结果还表明，Nakalipithecus可能属于后来形成Ouranopithecus谱系和AAH共同祖先的谱系。
Clarifying morphological variation among African and Eurasian hominoids during the Miocene is of particular importance for inferring the evolutionary history of humans and great apes. Among Miocene hominoids,NakalipithecusandOuranopithecusplay an important role because of their similar dates on different continents. Here, we quantify the lower fourth deciduous premolar (dp4) inner morphology of extant and extinct hominoids using a method of morphometric mapping and examine the phylogenetic relationships between these two fossil taxa. Our data indicate that early Late Miocene apes represent a primitive state in general, whereas modern great apes and humans represent derived states. WhileNakalipithecusandOuranopithecusshow similarity in dp4 morphology to a certain degree, the dp4 ofNakalipithecusretains primitive features and that ofOuranopithecusexhibits derived features. Phenotypic continuity among African ape fossils from Miocene to Plio-Pleistocene would support the African origin of African apes and humans (AAH). The results also suggest thatNakalipithecuscould have belonged to a lineage from which the lineage ofOuranopithecusand the common ancestor of AAH subsequently derived.