Exceptionally preserved crustaceans from the Oxfordian of eastern France (Terrain à Chailles Formation, Haute-Saône) Sylvain CHARBONNIER Muséum national d’Histoire naturelle, Département Histoire de la Terre, UMR 7207 CNRS, Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements, case postale 38, 57 rue Cuvier, F-75231 Paris cedex 05 (France)
[email protected] Dimitri PÉRÈS 10 rue Malar, F-75007 Paris (France)
[email protected] Charlène LETENNEUR Muséum national d’Histoire naturelle, Département Histoire de la Terre, case postale 38, 57 rue Cuvier, F-75231 Paris cedex 05 (France)
[email protected] Charbonnier S., Pérès D. & Letenneur C. 2012. — Exceptionally preserved crustaceans from the Oxfordian of eastern France (Terrain à Chailles Formation, Haute-Saône). Geodiversi- tas 34 (3): 531-568. http://dx.doi.org/10.5252/g2012n3a5 ABSTRACT The Oxfordian fauna from the Terrain à Chailles Formation, eastern France (Haute- Saône, Franche-Comté) is remarkable for its exceptionally preserved crustaceans found in siliceous concretions locally named “chailles”. The crustacean fauna in- cludes 9 different species assigned to the Glypheidae, the Erymidae, the Eryonidae and the Axiidae. Glypheid and erymid lobsters are the most diversified groups with four and three different species respectively. Re-examination of numerous new specimens allows to a more modern and more complete characterization of Glyphea regleyana (Desmarest, 1822), Glyphea muensteri von Meyer, 1840 and Eryma ventrosa (von Meyer, 1835). New detailed anatomic descriptions of these species highlight the presence of marked sexual dimorphism in G. regleyana and probably in E. ventrosa. They reveal processes of autotomy and phenomena of ecdysis in G. regleyana, E. ventrosa and G.