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Biochronological and palaeobiogeographical significance of the earliest Miocene mammal fauna from Northern Vietnam

Authors
  • Prieto, Jérôme1, 2
  • Antoine, Pierre-Olivier3
  • van der Made, Jan4
  • Métais, Grégoire5
  • Phuc, Laq The6
  • Quan, Quý Trương7
  • Schneider, Simon8
  • Tran, Dang Ngoc9
  • Vasilyan, Davit10, 11
  • Viet, Luong The9
  • Böhme, Madelaine12, 13
  • 1 Ludwig-Maximilians-University Munich, Department of Earth- and Environmental Science, Palaeontology, Richard-Wagner-Str. 10, Munich, 80333, Germany , Munich (Germany)
  • 2 Bayerische Staatssammlung für Paläontologie und Geologie, Richard-Wagner-Str. 10, Munich, 80333, Germany , Munich (Germany)
  • 3 Université de Montpellier, Place Eugène Bataillon, Institut des Sciences de l’Évolution, cc 64, CNRS, IRD, EPHE, Montpellier Cedex 05, 34095, France , Montpellier Cedex 05 (France)
  • 4 Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, Departamento de Paleobiología, c. José Gutiérrez Abascal 2, Madrid, 28006, Spain , Madrid (Spain)
  • 5 CR2P, Paléobiodiversité et Paléoenvironnements, UMR 7207 (CNRS, MNHN, UPMC), 8 rue Buffon, CP 38, Paris Cedex 05, 75231, France , Paris Cedex 05 (France)
  • 6 Vietnam National Museum of Nature, 18 Hoang Quoc Viet str., Cau Giay District, Hanoi, Vietnam , Hanoi (Vietnam)
  • 7 Geological Museum, 6 Pham Ngu Lao Str, Hanoi, Vietnam , Hanoi (Vietnam)
  • 8 CASP, 181A Huntingdon Road, Cambridge, CB3 0DH, UK , Cambridge (United Kingdom)
  • 9 Department of Geology and Minerals of Vietnam (DGMV), 6 Pham Ngu Lao Str, Hanoi, Vietnam , Hanoi (Vietnam)
  • 10 JURASSICA Museum, Route de Fontenais, Porrentruy, 21 2900, Switzerland , Porrentruy (Switzerland)
  • 11 University of Fribourg, Department of Geosciences, Chemin du musée 6, Fribourg, 1700, Switzerland , Fribourg (Switzerland)
  • 12 Eberhard Karls University, Department of Geoscience, Sigwartstr. 10, Tübingen, 72076, Germany , Tübingen (Germany)
  • 13 Senckenberg Centre for Human Evolution and Palaeoenvironment (HEP), Sigwartstr. 10, Tübingen, Germany , Tübingen (Germany)
Type
Published Article
Journal
Palaeobiodiversity and Palaeoenvironments
Publisher
Springer Berlin Heidelberg
Publication Date
Oct 06, 2017
Volume
98
Issue
2
Pages
287–313
Identifiers
DOI: 10.1007/s12549-017-0295-y
Source
Springer Nature
Keywords
License
Yellow

Abstract

Current scientific knowledge of Tertiary fossils from south of the Ailao Shan-Red River shear zone is extremely poor, in sharp contrast with the situation nowadays, as the area of Laos and Vietnam is regarded as a global hotspot of biodiversity. In this context, the few localities that yielded fossil assemblages are of first importance for the understanding of Cenozoic palaeobiogeography and the tectonic and palaeogeographical evolution of the region. Hang Mon 1 (Son La Province, Northern Vietnam) was the first site that provided evidence of Tertiary mammals, but its age remained very controversial, interpretations ranging from Oligocene to Late Miocene. Herein, we re-investigate the mammal fauna of the locality based on newly collected material and previously published fossil mammals. A new outcrop, Hang Mon 2, provides evidence of the rhinoceroses Pleuroceros blanfordi and Bugtirhinus sp. Together with the earlier finds of uncommonly small-sized Protaceratherium, these fossils allow a correlation to the earliest Miocene (most probably ranging from ~23 to ~21 Ma; Aquitanian) based on faunal comparison with the Sulaiman Province of Pakistan. The revision of the mammals from Hang Mon 1 is in agreement with this stratigraphic proposal. In addition, the discoveries from Vietnam (the rhinocerotid assemblage and Hyotherium) further support the hypothesis of strong biogeographical and environmental affinities between Europe, the Indian Subcontinent and Southeast Asia (Vietnam) during the Aquitanian.

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