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Zhang et al 2013 See discussions stats and author pro ?les for this publication at https www researchgate net publication Evolution of the Paleocene- Early Eocene larger benthic foraminifera in the Tethyan Himalaya of Tibet China Article in International

See discussions stats and author pro ?les for this publication at https www researchgate net publication Evolution of the Paleocene- Early Eocene larger benthic foraminifera in the Tethyan Himalaya of Tibet China Article in International Journal of Earth Sciences July DOI s - - - CITATIONS authors Qinghai Zhang Universit? t Bremen PUBLICATIONS CITATIONS SEE PROFILE Lin Ding Chinese Academy of Sciences PUBLICATIONS CITATIONS SEE PROFILE READS Helmut Willems Universit? t Bremen PUBLICATIONS CITATIONS SEE PROFILE All in-text references underlined in blue are linked to publications on ResearchGate letting you access and read them immediately Available from Qinghai Zhang Retrieved on September CInt J Earth Sci Geol Rundsch DOI s - - - ORIGINAL PAPER Evolution of the Paleocene-Early Eocene larger benthic foraminifera in the Tethyan Himalaya of Tibet China Qinghai Zhang ? Helmut Willems ? Lin Ding Received April Accepted November Ó Springer-Verlag Berlin Heidelberg Abstract The Paleocene-Early Eocene larger benthic foraminifera LBF in the far eastern Neo-Tethyan Ocean of Tibet still remain poorly known Here we present a novel high-resolution larger foraminiferal biozonation from the shallow-water limestones in Tibet which will improve our current understanding of the larger foraminiferal evolution in the eastern Neo- Tethyan Ocean Based on one continuous section at Tingri and three separate sections at Gamba ten Shallow Benthic Zones SBZ ?? have been designated in Tibet by following the principle of Oppel Zone In contrast to those in Europe the Paleocene LBFs in Tibet are characterized by high diversi ?cation of Lockhartia Kathina Daviesina Miscellanea Ranikothalia and Operculina and show progressively increasing diversity of genera and species during SBZ ?? Adult dimorphism and large shell size of some LBFs as well as di ?erentiation of the diversity between genera and species initiated as early as SBZ It suggests that the occurrence of the Larger Foraminifera Turnover LFT was probably not synchronous in the entire Neo-Tethyan Ocean because in Europe the LFT was generally thought to occur at the beginning of SBZ Q Zhang Á H Willems Department of Geosciences University of Bremen Bremen Germany e-mail zhang uni-bremen de Q Zhang Á L Ding Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing China H Willems Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing China During the Early Eocene the LBFs in Tibet decreased markedly on the generic level and increased on the species level and some new genera Alveolina Orbitolites Nummulites Assilina Discocyclina have gained predominance in Tibet It is nearly identical to the evolution of the LBFs in Europe and indicates a high-degree homogenization of the LBFs in the entire Neo-Tethyan Ocean Furthermore the Paleocene-Eocene P-E boundary in shallow-water environments has been clearly identi ?ed by us and it is situated in the upper part of SBZ and associated with no evident biotic turnover of shallow benthic foraminiferal communities The possible diachroneity of the LFT in the Neo-Tethyan Ocean and the evident lagging of the Paleocene-Eocene Thermal Maximum PETM behind the