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J. BARDIN, and I. ROUGET, and M. BENZAGGAGH, and F.T. FÜRSICHC, and F. CECCA, (2015) Lower Toarcien (Jurassique) ammonitesof the South Rifian rdgs (Morocco): Systematics, and biostratigraphy. Journal of Systematic Palaeontology, Taylor and Francis, Vol. 13, No. 6, 471 501, 2015.