Livio F. (*), Berlusconi A. (*), Michetti A.M. (*), Sileo G. (*), Zerboni A. (**), Trombino L. (**), Spoetl C. (°) & Rodnight H. (°)
(*) Department of Science & High Technology, University of Insubria, Via Valleggio 11, 22100 Como, Italy.
(**) Earth Sciences Department 'A. Desio', University of Milano, Via Mangiagalli 34, 20133 Milano, Italy.
(°) Institut für Geologie und Paläontologie, Universität Innsbruck, Innrain 52, 6020 Innsbruck, Austria.