First report of the early Eocene pteropods from the Zhepure Formation in Yadong, southern Tibet, China,Journal of Paleontology

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First report of the early Eocene pteropods from the Zhepure Formation in Yadong, southern Tibet, China
Journal of Paleontology ( IF 1.3 ) Pub Date : 2020-05-08 , DOI: 10.1017/jpa.2020.28
Xin-fa Li , Guo-biao Li , Christopher L. Garvie , Tian-yang Wang , Jun Zhao

During recent stratigraphical and micropaleontological investigations of the Gulupu section in Tüna, Yadong, of the Eocene Zhepure Formation, numerous holoplanktonic mollusks (pteropods) were recovered. Four species, assignable to two genera of pteropods (including Limacina yadongensis new species) were systematically described and illustrated, and a gastropod-bivalve biofacies was identified. This is the first report of Eocene (Ypresian) pteropods in southern Tibet; the same stratum also yields many other neritic faunas. The data presented in this study suggest that a semi-closed restricted gulf in the Tüna area existed and the occurrence of pteropods in Tüna may indicate transport from more open, deep water by oceanic currents during early Eocene. Based on the analysis of paleogeographical distribution of pteropods, it indicates that a Tethys seaway existed during the early Eocene (Ypresian).UUID: http://zoobank.org/7eb6f8dd-a973-4834-986a-310008476eb0

更新日期：2020-05-08

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