Open Access Highly Accessed Research article   Ralf Janssen1,
Martine Le Gouar2, Matthias Pechmann3, Francis Poulin114, Renata
Bolognesi125, Evelyn E Schwager6, Corinna Hopfen7, John K
Colbourne8, Graham E Budd1, Susan J Brown5, Nikola-Michael
Prpic3, Carolin Kosiol7, Michel Vervoort102, Wim GM Damen9*,
Guillaume Balavoine102* and Alistair P McGregor7*  Author
Affiliations  1 Department of Earth Sciences, Palaeobiology,
Villavägen 16, SE-75236 Uppsala, Sweden  2 Centre de Génétique
Moléculaire du CNRS, FRE 3144, avenue de la Terrasse 91198 Gif-
sur-Yvette, France  3 Georg-August-Universität Göttingen,
Johann-Friedrich-Blumenbach-Institut für Zoologie und
Anthropologie, Abteilung Entwicklungsbiologie, GZMB, Ernst-
Caspari-Haus, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany
5 Division of Biology, Kansas State University, Manhattan, KS
66506, USA  6 Department of Organismic and Evolutionary Biology,
Harvard University, 16 Divinity Ave, Cambridge MA 02138, USA  7
Institut für Populationsgenetik, Veterinärmed