Locality Layer
Djebel Bechar Namurian
Djebel Bechar Tagnana Fm., Calcaire vidange
Djebel Bechar upper Visean
Djebel Oun Graf Tagnana Fm., Calcaire vidange
Guelb el Aouda, S of Kenadsa unrecognized (Delépine)
Gueltet Ahmed ben Salah Westphalian
Horreit Antar Tagnana Fm., Calcaire vidange
Horreit Antar Tagnana Fm., above oolithe verde
Tagnana prominence Middle Tagnana Fm.