Ghinassi M. (*), Papini M. (**) & Libsekal Y. (***)
(*) Department of Geoscience, University of Padua, Via Gradenigo 6, 35137 Padova, Italy. E-mail: massimiliano.ghinassi@unipd.it
(**) Department of Earth Science, University of Florence, Via La Pira 4, 50121 Firenze, Italy.
(***) National Museum of Eritrea, University of Asmara, P.O. Box 5284, Asmara, Eritrea.