MIOCENE FOSSIL CERCOPITHECOIDS FROM KENYA
MIOCENE FOSSIL CERCOPITHECOIDS FROM KENYA
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DOI：
10.1002/ajpa.1330690404
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发表时间：
1986-04-01
影响因子：
2.8
通讯作者：
PICKFORD, M
中科院分区：
文献类型：
--
作者：
BENEFIT, BR;PICKFORD, M
Ngeringerowa、Ngorora和Nakali的化石，年代在850万至1050万年之间，本文介绍这些标本是唯一一个年代在1500万至600万年之间的猕猴化石。来自撒哈拉以南的非洲。Ngeringerowa的一个小colobine的下颌骨（大小类似于Colobus verus）被分配到一个新的属和种，Microcolobus tugenensis。与其他疣猴属不同，微疣猴的联合缺乏下横隆突。来自Nakali的下M1或2的colobine比M的磨牙长而窄。Tugenensis的形态特征，表明它可能属于一个独立的分类单元，而Ngorora的P4由于其独特的后尖形态特征，不能肯定地归属于亚科。新属之间的关系和其他中新世猴被认为。
Fossil cercopithecoid material from Ngeringerowa, Ngorora, and Nakali, dated at between 8.5 and 10.5 m.y., is described. The specimens are the only cercopithecoid remains dated between 15 and 6 m.y. from sub Saharan Africa. The mandible of a small colobine from Ngeringerowa (similar in size to Colobus verus) is assigned to a new genus and species, Microcolobus tugenensis. Unlike other colobine genera, the symphysis of Microcolobus lacks an inferior transverse torus. A colobine lower M1 or 2 from Nakali is longer and narrower than molars of M. tugenensis, indicating that it may belong to a distinct taxon. A P4 from Ngorora cannot be assigned confidently to subfamily, due to its unique metaconid morphology. The relationship between the new genus and other Miocene monkeys is considered.