Université de Fribourg

SEM study of black, blue, violet and yellow inglaze colours of the oldest Swiss tin‐opacified stove tiles (c .1450– c .1512, canton Bern)*

Maggetti, Marino

In: Archaeometry, 2020, p. arcm.12638

The ceramic colours of eight late medieval to early Renaissance stove tiles were studied by scanning electron microscopy‐backscattered electron (SEM‐BSE) images and SEM with energy‐dispersive spectroscopy (SEM‐EDS). Microstructural observations and chemical compositions of these colours give some insight into the colouring agents and techniques used by the potters. All decorations...

Université de Fribourg

Low prevalence of lactase persistence in bronze age europe indicates ongoing strong selection over the last 3,000 years

Burger, Joachim ; Link, Vivian ; Blöcher, Jens ; Schulz, Anna ; Sell, Christian ; Pochon, Zoé ; Diekmann, Yoan ; Žegarac, Aleksandra ; Hofmanová, Zuzana ; Winkelbach, Laura ; Reyna-Blanco, Carlos S. ; Bieker, Vanessa ; Orschiedt, Jörg ; Brinker, Ute ; Scheu, Amelie ; Leuenberger, Christoph ; Bertino, Thomas S. ; Bollongino, Ruth ; Lidke, Gundula ; Stefanović, Sofija ; Jantzen, Detlef ; Kaiser, Elke ; Terberger, Thomas ; Thomas, Mark G. ; Veeramah, Krishna R. ; Wegmann, Daniel

In: Current Biology, 2020, p. -

Lactase persistence (LP), the continued expression of lactase into adulthood, is the most strongly selected single gene trait over the last 10,000 years in multiple human populations. It has been posited that the primary allele causing LP among Eurasians, rs4988235-A [1], only rose to appreciable frequencies during the Bronze and Iron Ages [2, 3], long after humans started consuming milk from...

Université de Fribourg

Estimating and accounting for genotyping errors in RAD-seq experiments

Bresadola, Luisa ; Link, Vivian ; Buerkle, C. Alex ; Lexer, Christian ; Wegmann, Daniel

In: Molecular Ecology Resources, 2020, vol. 20, no. 4, p. 856–870

In non-model organisms, evolutionary questions are frequently addressed using reduced representation sequencing techniques due to their low cost, ease of use, and because they do not require genomic resources such as a reference genome. However, evidence is accumulating that such techniques may be affected by specific biases, questioning the accuracy of obtained genotypes, and as a...

Université de Fribourg

Lizards and snakes from the late Miocene hominoid locality of Ravin de la Pluie (Axios Valley, Greece)

Georgalis, Georgios L. ; Rage, Jean-Claude ; Bonis, Louis de ; Koufos, George D.

In: Swiss Journal of Geosciences, 2018, vol. 111, no. 1–2, p. 169–181

We here describe lizards and snakes from the late Miocene (MN 10) of Ravin de la Pluie, near Thessaloniki, Greece, a locality widely known for its hominoid primate Ouranopithecus macedoniensis. The new finds comprise two large-sized lizards (a probable anguine and a varanid) and two snakes (an elapid and a small-sized “colubrine”). Even if the material is represented by few specimens,...

Université de Fribourg

The oldest Archaeopteryx (Theropoda: Avialiae): a new specimen from the Kimmeridgian/Tithonian boundary of Schamhaupten, Bavaria

Rauhut​, Oliver W.M. ; Foth, Christian ; Tischlinger, Helmut

In: PeerJ, 2018, vol. 6, p. e4191

The iconic primeval bird Archaeopteryx was so far mainly known from the Altmühltal Formation (early Tithonian) of Bavaria, southern Germany, with one specimen having been found in the overlying Mörnsheim Formation. A new specimen (the 12th skeletal specimen) from the earliest Tithonian Painten Formation of Schamhaupten (Bavaria) represents the so far oldest representative of the genus. The...

Université de Fribourg

The girdles of the oldest fossil turtle, Proterochersis robusta, and the age of the turtle crown

Joyce, Walter G. ; Schoch, Rainer R. ; Lyson, Tyler R.

In: BMC Evolutionary Biology, 2013, vol. 13, no. 1, p. 266

Background: Proterochersis robusta from the Late Triassic (Middle Norian) of Germany is the oldest known fossil turtle (i.e. amniote with a fully formed turtle shell), but little is known about its anatomy. A newly prepared, historic specimen provides novel insights into the morphology of the girdles and vertebral column of this taxon and the opportunity to reassess its phylogenetic...

Bibliothèque cantonale jurassienne

The oldest african eucryptodiran turtle from the Cretaceous of Angola

Mateus, Octávio

In: Acta palaeontologica polonica, 2009, vol. 54, no. 4, p. 581-588

Bibliothèque cantonale jurassienne

Dispersal patterns of Eurasian hominoids : implications from Turkey

Begun, David R ; Güleç, Erksin ; Geraads, Denis

In: Deinsea : jaarbericht van het Natuurmuseum Rotterdam, 2003, vol. 10, p. 23-39