Authors Year Title
Ebbighausen, Becker & Bockwinkel 2002 Morphometric Analyses and Taxonomy of Oxyconic Goniatites (Paratornoceratinae n.subfam.) from the Early Famennian of the Tafilalt (Anti-Atlas, Morocco).
Abhandlungen der Geologischen Bundesanstalt Wien, 57: 167-180, 13 fig., Wien.