A new Late Agenian (MN2a, Early Miocene) fossil assemblage from Wallenried (Molasse Basin, Canton Fribourg, Switzerland)

被引：0
作者：
Bastien Mennecart
Bertrand Yerly
Pierre-Olivier Mojon
Chiara Angelone
Olivier Maridet
Madelaine Böhme
Claudius Pirkenseer
机构：
[1] Natural History Museum of Fribourg,Department of Geosciences, Earth Sciences
[2] University of Fribourg,CR2P
[3] CNRS,Centre de Recherches sur la Paléobiodiversité et les Paléoenvironnements, UMR 7207, Muséum National d’Histoire Naturelle
[4] UPMC,undefined
[5] Sorbonne Universités,undefined
[6] Laboratoire Romand de Dendrochronologie,undefined
[7] Institut Català de Paleontologia,undefined
[8] Jurassica Museum,undefined
[9] Eberhard Karls University,undefined
[10] Senckenberg Center for Human Evolution and Palaeoenvironment (HEP Tübingen),undefined
[11] Paléontologie A16,undefined
[12] Office de la Culture,undefined
来源：
Paläontologische Zeitschrift | 2016年 / 90卷
关键词：
Biostratigraphy; Palaeoenvironment; Mammalia; Reptilia; Ostracoda; Charophyta; Biostratigraphie; Paläoumwelt; Mammalia; Reptilia; Ostracoda; Charophyta;
D O I：
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学科分类号：
摘要：
Excavations of two fossiliferous layers in the Wallenried sand- and marl pit produced a very diversified vertebrate fauna. New material allows the reassessment of the taxonomic position of the ruminant taxa Andegameryxandegaviensis and endemic Friburgomeryx wallenriedensis. An emended diagnosis for the second species is provided and additional material of large and small mammals, as well as ectothermic vertebrates, is described. The recorded Lagomorpha show interesting morphological deviations from other Central European material, and probably represent a unique transitional assemblage with a co-occurrence of Titanomys, Lagopsis and Prolagus. Rodentia and Eulipotyphla belong to typical and well-known species of the Agenian of the Swiss Molasse Basin. Abundant small mammal teeth have allowed us to pinpoint the biostratigraphic age of Wallenried to late MN2a. The biostratigraphic age conforms to data derived from the charophyte assemblages and confirms the oldest occurrence of venomous snake fangs. The palaeoenvironmental context is quite complex. Sedimentary structures and fauna (fishes, frogs, salamanders, ostracods) are characteristic for a humid, lacustrine environment within a flood plain system.
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页码：101 / 123
页数：22
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