Dissopsalis, a middle and late Miocene proviverrine creodont (Mammalia) from Pakistan and Kenya
Dissopsalis, a middle and late Miocene proviverrine creodont (Mammalia) from Pakistan and Kenya
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DOI：
10.1080/02724634.1988.10011682
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发表时间：
1988-03
影响因子：
1.4
通讯作者：
J. Barry
中科院分区：
文献类型：
--
作者：
J. Barry
摘要旧大陆中新世的前原齿类包括巴基斯坦的Dissopsaliscarnifex和肯尼亚的Dissopsalispyroclasticus。D.食肉动物是中新世中期和晚期西瓦利克动物群中常见的捕食者，已知有头骨，许多牙齿和颌骨，以及一些孤立的颅后遗骸。年代地层范围为16.1 ~ 8.8Ma。D.火山碎屑岩则更为罕见。目前已知的只有最近在肯尼亚恩戈罗拉组发现的模式下颌骨和一个残缺的上臼齿，尽管在东非早中新世和中新世中期的不同地点也有其他标本的报道。Ngorora磨牙是唯一年代较好的D.为11.6Ma。Dissopsalis有一个类似于Hyaenodontines的超食肉齿系，但对这些和其他Hyaenodontines的分支分析表明Dissopsalis与Hyaenodontines只有远亲关系。相反，它与Anasinopa leakeyi关系最密切，Anasinopa leakeyi是一个早中新世物种，也是一个新物种。
ABSTRACT Old World Miocene proviverrine creodonts include Dissopsalis carnifex from Pakistan and Dissopsalis pyroclasticus from Kenya. D. carnifex is a common predator in the middle and late Miocene Siwalik faunas and is known from a skull, numerous teeth and jaws, and a few isolated postcranial remains. Its chronostratigraphic range is from 16.1 to 8.8 Ma. D. pyroclasticus is much rarer. It is known for certain from only the type mandible and one fragmentary upper molar recently found in the Ngorora Formation in Kenya, although other specimens have been reported from various East African early and middle Miocene sites. The Ngorora molar is the only well-dated specimen of D. pyroclasticus and is 11.6 Ma. Dissopsalis has a hypercarnassial dentition similar to that of the hyaenodontines, but a cladistic analysis of these and other hyaenodontids indicates that Dissopsalis is only distantly related to the hyaenodontines. Instead, it is most closely related to Anasinopa leakeyi, an early Miocene species also f...