Authors Year Title
Becker, House & Bockwinkel 2002 Famennian ammonoid zones of the eastern Anti-Atlas (southern Morocco). [R.T.Becker, M.R.House, J.Bockwinkel, V.Ebbighausen & Z.S.Aboussalam].
Münsteraner Forschungen, Geologie und Paläontologie, 93: 159-205, 10 fig., 6 pl., Münster.
Petter 1960 Clymènies du Sahara.
Publ. Serv. Carte géol. Algérie, n.S., Paléontologie, 6: 1-58, fig.1-5, pl.1-8; Alger.