Late Miocene to Early Pliocene Chadian vertebrate faunas: paleoenvironmental and paleobiogeographical implications.
L. Viriot, P. Vignaud, J. R Boisserie, E. Fara, F. Guy, F. Lihoreau, T. Lehmann, M. Schuster, C. Blondel, P. Duringer, A. Likius, H. T Mackaye, O. Otero, and M. Brunet
(2007)