喜马拉雅西北部莫汉德Siwalik群中Parapelomys (Murinae)的发现:古生物地理学意义

IF 0.5 4区地球科学 Q4 PALEONTOLOGY

Journal of the Palaeontological Society of India Pub Date : 2023-10-26 DOI:10.1177/05529360231205119

Ansuya Bhandari, Lawrence J. Flynn, Kapesa Lokho

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引用次数: 0

摘要

在Saharanpur-Dehradun公路沿线的Mohand地区暴露的Siwalik群的Mohand II地点(腹足类/耳石地点)报告了一个孤立的啮齿动物下臼齿。喜玛拉雅西部地区Mohand Doon山谷Siwalik组泥岩单元化石。根据古地磁反转地层学，该鼠系Parapelomys的出现与中新世晚期一致。该化石代表的物种显然比Parapelomys robertsi属的模式种更原始，更古老。这一发现记录了这种小鼠谱系在巴基斯坦波特瓦尔高原的类型区东南500公里处的地理范围。相关的动物群包括腹足类、介形类、鲤科鱼类和鳄鱼。

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Discovery of Parapelomys (Murinae) from the Siwalik Group of Mohand, NW Himalaya: Palaeobiogeography implications

An isolated rodent lower molar is being reported from Mohand II locality (gastropod/otolith locality) of the Siwalik Group exposed in the Mohand area, along the Saharanpur–Dehradun road. The fossils yielding mudstone units from the Siwalik Group exposed in the Doon Valley, Mohand, in the western Himalayan region. The occurrence of this murine mouse lineage, Parapelomys, is consistent with the late Miocene age based on palaeomagnetic reversal stratigraphy. The fossil represents a species apparently more primitive and older than the type species of the genus Parapelomys robertsi. The find documents the geographic range of this mouse lineage 500 km southeast of the type area for the species in the Potwar Plateau, Pakistan. The associated fauna comprises gastropods, ostracods, cyprinid fish and crocodiles in our collection.

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来源期刊

Journal of the Palaeontological Society of India PALEONTOLOGY-

CiteScore

1.10

自引率

16.70%

发文量

期刊介绍： The journal is devoted to the publication of original papers and review articles dealing with all aspects of Paleontology, Paleobotany, Stratigraphy, Geochronology, Anthropology and Pre-history.