埃及始新世类人猿灵长类动物中的犬类两性异形：卡托猿和原猿。
Canine sexual dimorphism in Egyptian Eocene anthropoid primates: Catopithecus and Proteopithecus.
作者信息
Simons E L, Plavcan J M, Fleagle J G
机构信息
Department of Biological Anthropology and Anatomy and Duke Primate Center, Duke University, 3705 Erwin Road, Durham, NC 27705-5000, USA.
出版信息
Proc Natl Acad Sci U S A. 1999 Mar 2;96(5):2559-62. doi: 10.1073/pnas.96.5.2559.
Abstract
Two very small late Eocene anthropoid primates, Catopithecus browni and Proteopithecus sylviae, from Fayum, Egypt show evidence of substantial sexual dimorphism in canine teeth. The degree of dimorphism suggests that these early anthropoids lived in social groups with a polygynous mating system and intense male-male competition. Catopithecus and Proteopithecus are smaller in estimated body size than any living primates showing canine dimorphism. The origin of canine dimorphism and polygyny in anthropoids was not associated with the evolution of large body size.
摘要
来自埃及法尤姆的两种非常小的始新世晚期类人猿灵长类动物，布朗卡托猿（Catopithecus browni）和西尔维娅原猿（Proteopithecus sylviae），显示出犬齿存在明显的两性异形证据。两性异形的程度表明，这些早期类人猿生活在具有一夫多妻制交配系统和激烈雄性间竞争的社会群体中。卡托猿和原猿的估计体型比任何现存显示犬齿两性异形的灵长类动物都要小。类人猿中犬齿两性异形和一夫多妻制的起源与大体型的进化无关。
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