Degree in Geology (1987) and PhD in Paleontology (1991). I work on Quaternary mammals, and participate at different Plio-Pleistocene projects around the World, been the co-leader of the Baza and Incarcal projects in Spain, the Oued Sarrat project in Tunisia, and the Engel Ela-Ramud project in Eritrea. I also participate in the study of the sites of Buia in Eritrea, Melka Wakena in Ethiopia, and Dmanisi in Georgia, and have worked in the past studying the sites of the Atbara River in Sudan, `Ubeidiya, Gesher Benot Ya'aqov, and Bizat Ruhama in Israel, Argentario and Pirro Nord in Italy, Vallonnet in France, and Cueva Victoria in Spain.