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Université de Fribourg

A new testudinoid turtle from the middle to late Eocene of Vietnam

Garbin, Rafaella C. ; Böhme, Madelaine ; Joyce, Walter G.

In: PeerJ, 2019, vol. 7, p. e6280

Testudinoidea is a major clade of turtles that has colonized different ecological environments across the globe throughout the Tertiary. Aquatic testudinoids have a particularly rich fossil record in the Tertiary of the northern hemisphere, but little is known about the evolutionary history of the group, as the phylogenetic relationships of most fossils have not been established with...

Université de Fribourg

3D morphology of pharyngeal dentition of the genus Capoeta (Cyprinidae): Implications for taxonomy and phylogeny

Ayvazyan, Anna ; Vasilyan, Davit ; Böhme, Madelaine

In: Journal of Zoological Systematics and Evolutionary Research, 2019, vol. 57, no. 1, p. 179–190

Capoeta is a herbivorous cyprinid fish genus, widely distributed in water bodies of Western Asia. Recent species show a distinct biogeographic pattern with endemic distribution in large fluvial drainage basins. As other cyprinids, the species of this genus are characterized by the presence of the pharyngeal bone with pharyngeal teeth. Despite this, the detailed morphology of the pharyngeal...

Université de Fribourg

Fossil amphibians and reptiles from Plakias, Crete: A glimpse into the earliest late Miocene herpetofaunas of southeastern Europe

Georgalis, Georgios L. ; Villa, Andrea ; Vlachos, Evangelos ; Delfino, Massimo

In: Geobios, 2016, vol. 49, no. 6, p. 433–444

Fossil amphibians and reptiles from the earliest late Miocene (early Tortonian, MN 9) of Plakias (Crete, Greece) are described in this paper. Most of the material is fragmentary, precluding precise taxonomic assignment. Nevertheless, the herpetofauna of Plakias is here shown to be diverse, comprising at least six different taxa: an alytid anuran, a crocodilian, two turtles (a pan-trionychid...

Université de Fribourg

A taxonomic reassessment of Piramys auffenbergi, a neglected turtle from the late Miocene of Piram Island, Gujarat, India

Ferreira, Gabriel S. ; Bandyopadhyay, Saswati ; Joyce, Walter G.

In: PeerJ, 2018, vol. 6, p. e5938

Piramys auffenbergi was described as an emydine turtle based on a well-preserved skull retrieved from late Miocene deposits exposed on Piram Island, India. The description and figures provided in the original publication are vague and do not support assignment to Emydinae. This taxon has mostly been ignored by subsequent authors.Material and Methods: We reexamine the holotype specimen,...

Université de Fribourg

The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468

Stainbank, Stephanie ; Spezzaferri, Silvia ; Kroon, Dick ; Leau, Erica S. de ; Rüggeberg, Andres

In: Swiss Journal of Geosciences, 2018, vol. 111, no. 3, p. 511–522

Here we define a new morphospecies of planktonic foraminifera Globigerinoides eoconglobatus n. sp., identified from International Ocean Discovery Program (IODP) expedition 359 samples from drift deposits of the Maldives, Inner Sea. Through biostratigraphic analysis, we infer it may be the direct ancestor of Globigerinoides conglobatus evolving from Globigerinoides obliquus in the Late Miocene...

Université de Fribourg

Biostratigraphy of large benthic foraminifera from Hole U1468A (Maldives): a CT-scan taxonomic approach

Coletti, Giovanni ; Stainbank, Stephanie ; Fabbrini, Alessio ; Spezzaferri, Silvia ; Foubert, Anneleen ; Kroon, Dick ; Betzler, Christian

In: Swiss Journal of Geosciences, 2018, vol. 111, no. 3, p. 523–536

Large benthic foraminifera are important components of tropical shallow water carbonates. Their structure, developed to host algal symbionts, can be extremely elaborate and presents stratigraphically-significant evolutionary patterns. Therefore their distribution is important in biostratigraphy, especially in the Indo-Pacific area. To provide a reliable age model for two intervals of IODP...

Haute Ecole Arc Conservation-Restauration

Etude de corrosion évolutive présente sur le soubassement d'une Renault 25 Limousine conservée à la Cité de l'Automobile-Collection Schlumpf, Mulhouse

Ducimetière, Marie

Mémoire de bachelor : Haute Ecole Arc Conservation-Restauration, 2018.

The “Cité de l'Automobile - Collection Schlumpf” counts among its collections more than 650 vehicles, 250 of which are preserved in the museum's storage areas, an environment with little control. The issue of this thesis concerns the reactivation of corrosion present at the underside (or chassis-platform) of a Renault 25 Limousine. Assembled in the late 80s, this car entered the museum's...

Haute Ecole Arc Conservation-Restauration

Conservation of charred archaeological textiles

Ramírez Calderón, Andrea

Mémoire de master : Haute Ecole Arc Conservation-Restauration, 2018.

Archaeological textiles that were carbonised prior to their burial often survived to the present days. They are particularly friable and in recent years research has focused on the combination of consolidants and lubricants for their freeze-drying treatment. For this master thesis, consolidation tests were carried out on wet charred archaeological samples from the late medieval archaeological...

Université de Fribourg

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

Antoine, Pierre-Olivier ; Made, Jan van der ; Métais, Grégoire ; Phuc, Laq The ; Quan, Quý Tr??ng ; Schneider, Simon ; Tran, Dang Ngoc ; Vasilyan, Davit ; Viet, Luong The ; Böhme, Madelaine

In: Palaeobiodiversity and Palaeoenvironments, 2018, vol. 98, no. 2, p. 287–313

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...

Université de Fribourg

A description of the skull of eubaena cephalica (hay, 1904) and new insights into the cranial circulation and innervation of baenid turtles

Rollot, Yann ; Lyson, Tyler R. ; Joyce, Walter G.

In: Journal of Vertebrate Paleontology, 2018, vol. 38, no. 3, p. e1474886

The internal carotid system has played an important role in the systematics of fossil turtles, including baenids. A new, almost perfectly preserved specimen of Eubaena cephalica provides an opportunity to explore for the first time the cranial circulation and innervation of this taxon using CT (computed tomography) scans. We here document that the skull possesses a well-developed, branching...