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Université de Fribourg

Birds have peramorphic skulls, too: anatomical network analyses reveal oppositional heterochronies in avian skull evolution

Plateau, Olivia ; Foth, Christian

In: Communications Biology, 2020, vol. 3, no. 1, p. 195

In contrast to the vast majority of reptiles, the skulls of adult crown birds are characterized by a high degree of integration due to bone fusion, e.g., an ontogenetic event generating a net reduction in the number of bones. To understand this process in an evolutionary context, we investigate postnatal ontogenetic changes in the skulls of crown bird and non-avian theropods using anatomical...

Université de Fribourg

Feeding biomechanics suggests progressive correlation of skull architecture and neck evolution in turtles

Ferreira, Gabriel S. ; Lautenschlager, Stephan ; Evers, Serjoscha W. ; Pfaff, Cathrin ; Kriwet, Jürgen ; Raselli, Irena ; Werneburg, Ingmar

In: Scientific Reports, 2020, vol. 10, p. 5505

The origin of turtles is one of the most long-lasting debates in evolutionary research. During their evolution, a series of modifications changed their relatively kinetic and anapsid skull into an elongated akinetic structure with a unique pulley system redirecting jaw adductor musculature. These modifications were thought to be strongly correlated to functional adaptations, especially to bite...

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...

Consortium of Swiss Academic Libraries

Hydropower production and river rehabilitation: A case study on an alpine river

Fette, M. ; Weber, C. ; Peter, A. ; Wehrli, B.

In: Environmental Modeling & Assessment, 2007, vol. 12, no. 4, p. 257-267

Consortium of Swiss Academic Libraries

On the formation of dwarf galaxies and stellar haloes

Read, J. I. ; Pontzen, A. P. ; Viel, M.

In: Monthly Notices of the Royal Astronomical Society, 2006, vol. 371, no. 2, p. 885-897

Bibliothèque cantonale jurassienne

Biomechanical investigations on the skulls of reptiles and mammals

Preuschoft, Holger ; Witzel, Ulrich

In: Senckenbergiana lethaea : wissenschaftliche Mitteilungen der Senckenbergischen Naturforschenden Gesellschaft, 2002, vol. 82, no. 1, p. 207-222