A new species of Purgatorius (Mammalia; Primatomorpha) from the lower Paleocene Bear formation, Crazy Mountains basin, south-central Montana
A new species of Purgatorius (Mammalia; Primatomorpha) from the lower Paleocene Bear formation, Crazy Mountains basin, south-central Montana
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DOI：
10.1017/s0022336000039032
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发表时间：
1997-01-01
影响因子：
1.4
通讯作者：
Buckley, GA
中科院分区：
文献类型：
--
作者：
Buckley, GA
Purgatorius titusi，由51颗牙齿和颌骨碎片代表，描述于蒙大拿州中南部疯狂山脉盆地的下古新世熊组。几个联会形态，包括一个弱的postprotocingulum和臼齿三角的近中弯曲，是该分类群的“plesiadapiform”的亲和力的指示。其他特征，如更宽的花柱架和上臼齿的不太方形的舌轮廓，比Purgatorius unio更原始，Purgatorius unio是迄今为止最早出现的灵长类动物。
Purgatorius titusi, represented by 51 teeth and jaw fragments, is described from the lower Paleocene Bear Formation of the Crazy Mountains Basin in south-central Montana. Several synapomorphies, including a weak postprotocingulum and mesial inflection of molar trigonids, are indicative of the taxon's ''plesiadapiform'' affinities. Other features, such as wider stylar shelf and a less squared lingual outline on upper molars, are more primitive than those of Purgatorius unio, heretofore the earliest occurring species of well-represented primatomorphs.