Fig. 1
From: The oldest ammonoids of Morocco (Tafilalt, lower Emsian)
Position of the ammonoid locality SW of Erfoud (Tafilalt, eastern Anti-Atlas), near the NE end of Jebel Mech Irdane, showing the regional geology in an extraction from the geological map, 1:50,000, sheet Irara (Alvaro et al. 2014); or 5b = Lower Ktaoua Formation (Caradoc), or 5c = Tiouririne Formation (Caradoc/lower Ashgill), or6a = Bani Group (top Ordovician), s3 = Ludlow, d3a = Amerboh Formation (s.l.), Lower Member (lower Emsian), d3b = Amerboh Formation (s.str.), Upper Member (upper Emsian), d5 = Boutchrafine Formation, Upper Member (Givetian), d7a = Achguig Formation, Middle Member (middle Famennian), AI and q1-2 = Quaternary terraces, As = Sebkha, o (red) = dolerite