1999 Korn, Klug & Mapes, p.346, no outcrops, all specimens collected loosely..
2007 Korn et al.Basal Mougui Ayoun Fm. 12 km S of Dar Kaoua.

12 km south of the Dar Kaoua oasis near Merzouga (Anti-Atlas, Morocco); base of the Mougui Ayoun Formation (Entogonites-Maxigoniatites Assemblage, early Late Viséan).