Authors	Year	Title
Becker	2018	Bou Tchrafine - central Tafilalt reference section for Devonian stratigraphy and cephalopod succession Becker, R.T., Aboussalam, Z.S., Harternfers, S. et al., Münster. Forsch. Geol. Paläont. 110: 158-187
Klug	2001	Early Emsian ammonoids from the eastern Anti-Atlas (Morocco) and their succession. Paläontologische Zeitschrift, 74: 479-515, 21 figs., Stuttgart.
Korn & Klug	2002	Ammoneae Devonicae. In: Fossilium Catalogus, I: Animalia (edit. Riegraf,W.), Pars 138: 375 p., 238 fig., 4 tab., Leiden (Backhuys Publ.).