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Université de Fribourg

A taxonomic revision of geoemydid turtles from Siwalik-age of India and Pakistan

Garbin, Rafaella C. ; Bandyopadhyay, Saswati ; Joyce, Walter G.

In: European Journal of Taxonomy, 2020, no. 652, p. -

Neogene (Siwalik-aged) deposits from India and Pakistan have yielded many vertebrate fossils, of which most were named during the 19th century, including numerous geoemydid turtles. In contrast to many other faunal components from the Siwaliks, geoemydids have not undergone taxonomic revision for more than a century and most fossils have therefore been believed to correspond to recent taxa....

Université de Fribourg

A review of the fossil record of nonbaenid turtles of the clade Paracryptodira

Joyce, Walter G. ; Anquetin, Jérémy

In: Bulletin of the Peabody Museum of Natural History, 2019, vol. 60, no. 2, p. 129–155

The fossil record of nonbaenid paracryptodires ranges from the Late Jurassic (Kimmeridgian) to the Paleocene of North America and Europe only. Earlier remains may be present as early as the Middle Jurassic (Bathonian). Only a single dispersal event is documented between the two continents after their breakup during the Cretaceous in the form of the appearance of the Compsemys lineage in the ...

Université de Fribourg

A dedicated target capture approach reveals variable genetic markers across micro- and macro-evolutionary time scales in palms

de La Harpe, Marylaure ; Hess, Jaqueline ; Loiseau, Oriane ; Salamin, Nicolas ; Lexer, Christian ; Paris, Margot

In: Molecular Ecology Resources, 2019, p. -

Understanding the genetics of biological diversification across micro‐ and macro‐ evolutionary time scales is a vibrant field of research for molecular ecologists as rapid advances in sequencing technologies promise to overcome former limitations. In palms, an emblematic, economically and ecologically important plant family with high diversity in the tropics, studies of diversification at...

Université de Fribourg

A social revolution in the name of a religion? : The Islamic Revolution of 1978/79 in Iran

Sheikhzadegan, Amir

In: sozialpolitik.ch, 2018, vol. 1, no. 1, p. Article: 1.6

The year 1979 witnessed an event that was to impact the world for decades to come. The Western-friendly monarchic regime of Iran that had pushed through a rapid modernization program by leaning on a repressive security apparatus was toppled by a nationwide protest movement and replaced by an Islamist regime. This study delivers, from a historical sociological perspective, an analysis of the major...

Université de Fribourg

Dedicated photoreceptor pathways in Drosophila larvae mediate navigation by processing either spatial or temporal cues

Humberg, Tim-Henning ; Bruegger, Pascal ; Afonso, Bruno ; Zlatic, Marta ; Truman, James W. ; Gershow, Marc ; Samuel, Aravinthan ; Sprecher, Simon G.

In: Nature Communications, 2018, vol. 9, no. 1, p. 1260

To integrate changing environmental cues with high spatial and temporal resolution is critical for animals to orient themselves. Drosophila larvae show an effective motor program to navigate away from light sources. How the larval visual circuit processes light stimuli to control navigational decision remains unknown. The larval visual system is composed of two sensory input channels,...

Université de Fribourg

The Holy Name of Jesus in Venetian-Ruled Crete

Bacci, Michele

In: Convivium: Exchanges and Interactions in the Arts of Medieval Europe, Byzantium, and the Mediterreanean, 2014, vol. 1, no. 1, p. 190-205

Focusing on Andreas Ritzos' icon with the monogram IHS in Athens, this article offers insights about the role played by the monogram on Crete and points out that the particular solution shown in Ritzos' image is not in keeping with St. Bernardine's "icon" of the Holy Name of Jesus and indicates an association with the symbolism of the holy host.

Université de Fribourg

A review of the fossil record of turtles of the clade Thalassochelydia

Anquetin, Jérémy ; Püntener, Christian ; Joyce, Walter G.

In: Bulletin of the Peabody Museum of Natural History, 2017, vol. 58, no. 2, p. 317–369

The Late Jurassic (Oxfordian to Tithonian) fossil record of Europe and South America has yielded a particularly rich assemblage of aquatic pan-cryptodiran turtles that are herein tentatively hypothesized to form a monophyletic group named Thalassochelydia. Thalassochelydians were traditionally referred to three families, Eurysternidae, Plesiochelyidae, and Thalassemydidae, but the current...

Université de Fribourg

A review of the fossil record of old world turtles of the clade pan-trionychidae

Georgalis, Georgios L. ; Joyce, Walter G.

In: Bulletin of the Peabody Museum of Natural History, 2017, vol. 58, no. 1, p. 115–208

Turtles of the clade Pan-Trionychidae have a rich fossil record in the Old World, ranging from the Early Cretaceous (Hauterivian) to the Holocene. The clade most probably originated in Asia during the Early Cretaceous but spread from there to the Americas and Europe by the Late Cretaceous, to India and Australia by the Eocene, and to Afro-Arabia by the Neogene. The presence of a single...

Université de Fribourg

A review of the fossil record of basal mesozoic turtles

Joyce, Walter G.

In: Bulletin of the Peabody Museum of Natural History, 2017, vol. 58, no. 1, p. 65–113

Turtles (Testudinata) are the clade of amniotes characterized by a complete turtle shell. New insights into the phylogeny of the group have revealed that a diverse assemblage of fossil turtles populate the stem lineage that lead to the turtle crown (Testudines). To aid communication, the terms Mesochelydia and Perichelydia are herein defined for two internested clades more inclusive than...

Université de Fribourg

Hold on to your friends: dedicated chaperones of ribosomal proteins

Pillet, Benjamin ; Mitterer, Valentin ; Kressler, Dieter ; Pertschy, Brigitte

In: BioEssays, 2017, vol. 39, no. 1, p. -

Eukaryotic ribosomes are assembled from their components, the ribosomal RNAs and ribosomal proteins, in a tremendously complex, multi-step process, which primarily takes place in the nuclear compartment. Therefore, most ribosomal proteins have to travel from the cytoplasm to their incorporation site on pre-ribosomes within the nucleus. However, due to their particular characteristics, such as...