1. Université de Rennes, CNRS, Géosciences Rennes, Rennes, France
2. Instituto Geológico y Minero de España - CSIC, Valencia, Spain
3. Institute of Materials Physics, Helmholtz-Zentrum Hereon, Outstation at Desy, Geesthacht, Germany
4. Museo Nacional de Historia Natural Prof. Eugenio de Jesús Marcano, Santo Domingo, Dominican Republic
5. Department of Palaeontology and Historical Geology, Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany