Oscar started following the work of Joan Madurell Malapeira, Institut Català de Paleontologia, Neogene and Quaternary. 2012-02-02 08:18:54 -0800

Oscar started following the work of José Manuel Gasca, Universidad de Zaragoza, Paleontology. 2011-10-27 05:15:44 -0700

Oscar started following the work of Pep Aurell, Institut Català de Paleontologia, Neogene and Quaternary. 2011-10-01 16:45:11 -0700