Université de Fribourg

New data on Amynodontidae (Mammalia, Perissodactyla) from Eastern Europe: Phylogenetic and palaeobiogeographic implications around the Eocene-Oligocene transition

Tissier, Jérémy ; Becker, Damien ; Codrea, Vlad ; Costeur, Loïc ; Fărcaş, Cristina ; Solomon, Alexandru ; Venczel, Marton ; Maridet, Olivier

In: PLOS ONE, 2018, vol. 13, no. 4, p. e0193774

Amynodontidae is a family of Rhinocerotoidea (Mammalia, Perissodactyla) known from the late Early Eocene to the latest Oligocene, in North America and Eurasia. European Amynodontidae are very rare, and all remains belong almost exclusively to a single post—Grande Coupure genus from the Oligocene, Cadurcotherium. The “Grande Coupure” defines an extinctions and dispersal-generated...

Université de Fribourg

A new species of Argyromys (Rodentia, Mammalia) from the oligocene of the valley of lakes (Mongolia): its importance for palaeobiogeographical homogeneity across Mongolia, China and Kazakhstan

López-Guerrero, Paloma ; Maridet, Olivier ; Zhang, Zhaoqun ; Daxner-Höck, Gudrun

In: PLOS ONE, 2017, vol. 12, no. 3, p. e0172733

We describe a new species of Rodentia (Mammalia), Argyromys cicigei sp. nov. from Toglorhoi (fossil bed TGW-A/2a) in Mongolia and Ulantatal (fossil beds UTL 1 and UTL 7) in China. Its tooth morphology differs from the type species Argyromys aralensis from Akespe in Kazakhstan by smaller size and simpler structures. Argyromys has been assigned in different families of Muroidea, such as...

Université de Fribourg

The record of Aplodontidae (Rodentia, Mammalia) in the Oligocene and Miocene of the Valley of Lakes (Central Mongolia) with some comments on the morphologic variability

Maridet, Olivier ; Daxner-Höck, Gudrun ; López-Guerrero, Paloma ; Göhlich, Ursula B.

In: Palaeobiodiversity and Palaeoenvironments, 2017, vol. 97, no. 1, p. 25–49

The present publication reports new discoveries of Oligocene and early Miocene aplodontid rodents from the Taatsiin Gol area (Valley of Lakes) in Mongolia. The fossil aplodontids recovered in this area are mainly composed of dental remains, some fragmentary jaws plus one partially preserved skull. Aplodontid rodents have been found from the early Oligocene (local biozone A) to the early...

Université de Fribourg

Oligocene and early Miocene mammal biostratigraphy of the Valley of Lakes in Mongolia

Harzhauser, Mathias ; Daxner-Höck, Gudrun ; Erbajeva, Margarita A. ; López-Guerrero, Paloma ; Maridet, Olivier ; Oliver, Adriana ; Piller, Werner E. ; Göhlich, Ursula B. ; Ziegler, Reinhard

In: Palaeobiodiversity and Palaeoenvironments, 2017, vol. 97, no. 1, p. 219–231

The Taatsiin Gol Basin in Mongolia is a key area for understanding the evolution and dispersal of Central Asian mammal faunas during the Oligocene and early Miocene. After two decades of intense fieldwork, the area is extraordinarily well sampled and taxonomically well studied, yielding a large dataset of 19,042 specimens from 60 samples. The specimens represent 176 species-level and 99...

Université de Fribourg

Cricetidae (Rodentia, Mammalia) from the oligocene of the valley of Lakes (Mongolia): the genera Aralocricetodon, Eocricetodon, Bagacricetodon, Witenia and Paracricetodon

López-Guerrero, Paloma ; Maridet, Olivier ; Daxner-Höck, Gudrun

In: Palaeobiodiversity and Palaeoenvironments, 2017, vol. 97, no. 1, p. 93–109

We describe the remains of Aralocricetodon Bendukidze, 1993; Bagacricetodon Gomes Rodrigues et al., 2012; Eocricetodon Wang, 2007; Witenia de Bruijn et al., 2003 and Paracricetodon Schaub, 1925 (Cricetidae, Rodentia, Mammalia) from the Taatsiin Gol and Taatsiin Tsagaan Nuur areas (Mongolia). The studied material (comprising 128 teeth) stems from 9 localities and 23 fossil layers spanning a...

Université de Fribourg

Evolution of oligo-miocene Talpids (Mammalia, Talpidae) in europe: focus on the genera Myxomygale and Percymygale n. gen.

Hugueney, Marguerite ; Maridet, Olivier

In: Historical Biology, 2017, p. -

New material recovered in the Oligocene locality St-Martin-de-Castillon (Vaucluse, France; MP24) provides a better knowledge of the characteristics of the species vauclusensis in its type-locality, hitherto assigned to the genus Myxomygale (Talpinae, tribe Urotrichini). In Europe, the species assigned to Myxomygale range from Late Eocene/Early Oligocene to the end of the Middle Miocene (MN...

Université de Fribourg

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

Mennecart, Bastien ; Yerly, Bertrand ; Mojon, Pierre-Olivier ; Angelone, Chiara ; Maridet, Olivier ; Böhme, Madelaine ; Pirkenseer, Claudius

In: Paläontologische Zeitschrift, 2015, p. 1–23

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 Andegameryx andegaviensis and endemic Friburgomeryx wallenriedensis. An emended diagnosis for the second species is provided and additional material of large and small mammals, as well as...