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Université de Fribourg

The fossil record of the genus Varanus from the Southern Caucasus (Armenia, Georgia)

Vasilyan, Davit ; Bukhsianidze, Maia

In: PeerJ, 2020, p. e8322

The Southern Caucasus, with its special geographic position and complex topography, is a well-known biodiversity hotspot. However, the formation of this hotspot remains largely unstudied. To reveal this, a thorough study of the fossil record of the region is necessary. In the present paper, we describe for the first time fossil monitor lizards (Varanus sp.) from two late Miocene localities from...

Université de Fribourg

The last Palaeoproteus (Urodela: Batrachosauroididae) of Europe

Vasilyan, Davit ; Yanenko, Vadym

In: Scientific Reports, 2020, vol. 10, p. 2733

The Batrachosauroididae are an enigmatic group of salamanders known from the Cretaceous and Tertiary of North America and Europe. In Europe, the family is known only by two species of the genus Palaeoproteus. The genus has limited distribution in Western and Central Europe. In the present paper, we describe a new species, Palaeoproteus miocenicus, from the early late Miocene (11–9 Ma) of...

Université de Fribourg

Fish, amphibian and reptilian faunas from latest Oligocene to middle Miocene localities from Central Turkey

Vasilyan, Davit ; Roček, Zbyněk ; Ayvazyan, Anna ; Claessens, Leon

In: Palaeobiodiversity and Palaeoenvironments, 2019, vol. 99, no. 4, p. 723–757

In this paper, we describe ectothermic vertebrate assemblages from the Kargı 1, Kargı 2, Kargı 3, Harami1, Harami 3, Hancılı, Keseköy, Çandır and Bağiçi localities in Turkey. The ages of these localities range from the latest Oligocene to the middle Miocene. The preserved non-mammalian fauna of the studied localities includes fishes (Luciobarbus sp., Barbus sp., Luciobarbus vel...

Université de Fribourg

A new species of Palaeopython (Serpentes) and other extinct squamates from the Eocene of Dielsdorf (Zurich, Switzerland)

Georgalis, Georgios L. ; Scheyer, Torsten M.

In: Swiss Journal of Geosciences, 2019, vol. 112, no. 2, p. 383–417

The lizard and snake fauna from the late middle–late Eocene (MP 16–MP 20) of Dielsdorf, near Zurich, Switzerland, is described comprehensively in this paper. Detailed comparisons of the Dielsdorf material with other extinct taxa allow us to establish a new species of the large “booid” genus Palaeopython, i.e., Palaeopython helveticus sp. nov., characterized by a unique combination of...

Université de Fribourg

A new alligatoroid from the Eocene of Vietnam highlights an extinct Asian clade independent from extant Alligator sinensis

Massonne, Tobias ; Vasilyan, Davit ; Rabi, Márton ; Böhme, Madelaine

In: PeerJ, 2019, vol. 7, p. e7562

During systematic paleontological surveys in the Na Duong Basin in North Vietnam between 2009 and 2012, well-preserved fossilized cranial and postcranial remains belonging to at least 29 individuals of a middle to late Eocene (late Bartonian to Priabonian age (39–35 Ma)) alligatoroid were collected. Comparative anatomical study of the material warrants the diagnosis of a new taxon,...

Université de Fribourg

Ancient mitogenomics clarifies radiation of extinct Mascarene giant tortoises ( Cylindraspis spp.)

Kehlmaier, Christian ; Graciá, Eva ; Campbell, Patrick D. ; Hofmeyr, Margaretha D. ; Schweiger, Silke ; Martínez-Silvestre, Albert ; Joyce, Walter ; Fritz, Uwe

In: Scientific Reports, 2019, vol. 9, no. 1, p. 1–7

The five extinct giant tortoises of the genus Cylindraspis belong to the most iconic species of the enigmatic fauna of the Mascarene Islands that went largely extinct after the discovery of the islands. To resolve the phylogeny and biogeography of Cylindraspis, we analysed a data set of 45 mitogenomes that includes all lineages of extant tortoises and eight near-complete sequences of all...

Université de Fribourg

New paroxyclaenid mammals from the early Eocene of the Paris Basin (France) shed light on the origin and evolution of these endemic European cimolestans

Solé, Floréal ; Plateau, Olivia ; Le Verger, Kévin ; Phélizon, Alain

In: Journal of Systematic Palaeontology, 2019, vol. 17, no. 20, p. 1711–1743

We present new species of an enigmatic family of mammals, which is endemic to Europe, the Paroxyclaenidae: Merialus bruneti sp. nov., Fratrodon tresvauxi gen. et sp. nov., Paraspaniella gunnelli gen. et sp. nov., and Sororodon tresvauxae gen. et sp. nov. The fossils described come from six localities of the Ypresian of the Paris Basin (France): Pourcy (MP7), Mutigny, Avenay, Condé-en-Brie...

Université de Fribourg

New data on the Miocene dormouse Simplomys García-Paredes, 2009 from the peri-alpin basins of Switzerland and Germany: palaeodiversity of a rare genus in Central Europe

Prieto, Jérôme ; Lu, Xiao-Yu ; Maridet, Olivier ; Becker, Damien ; Pirkenseer, Claudius ; Rauber, Gaëtan ; Peláez-Campomanes, Pablo

In: Palaeobiodiversity and Palaeoenvironments, 2019, vol. 99, no. 3, p. 527–543

Simplomys, a dormouse with a simple dental morphology compared to other glirids, shows a continuous evolution in Spain during the end of the Ramblian and up to the middle Aragonian, the stratigraphic frame considered in this work. In contrast, the record of the genus in Central Europe is reduced to a few localities spanning from the early to the middle Miocene. We review the record from the...

Université de Fribourg

Aubenas-les-Alpes (S-E France). Part III – Last and final part of the mammalian assemblage with some comments on the palaeoenvironment and palaeobiogeography = Aubenas-les-Alpes (S-E France). Part III – Dernière partie de l’assemblage mammalien avec quelques commentaires sur le paléoenvironnement et la paléobiogéographie

Maridet, Olivier ; Hugueney, Marguerite ; Costeur, Loïc

In: Annales de Paléontologie, 2019, vol. 105, no. 2, p. 139–153

The study of the new material from Aubenas-les-Alpes makes it possible to add to the faunal list taxa hitherto unknown in this locality (Neurogymnurus cayluxi, Issiodoromys minor, Eomys minor, Pseudocricetodon cf. hausi, Pseudocricetodon aff. philippi). New specimens of the shrew Srinitium marteli increase our knowledge of this rare insectivore. The characteristics of the theridomorph I....