Authors Year Title
Ebbighausen, Becker & Bockwinkel 2007 Givetian (Middle Devonian) brachiopod-goniatite-correlation in the Dra Valley (Anti-Atlas, Morocco) and Bergisch Gladbach-Paffrath Syncline (Rhenish Massif, Germany). [V.Ebbighausen,R.T.Becker,J.Bockwinkel & Z.S.Aboussalam].
Geological Society,London,Special Publications, 278_ 157-172, 9 fig., 1 tab., London.
Göddertz 1987 Devonische Goniatiten aus SW-Algerien und ihre stratigraphische Einordnung in die Conodonten-Abfolge.
Palaeontographica, Abt.A., 197 (4-6): 127-220, fig.1-42, pl.1-15; Stuttgart.
House 1962 Observations on the ammonoid succesion of the North American Devonian.
Journal of Paleontology, 36: 247-284, fig.1-15, tab.1-3, pl.43-48; Tulsa, Okla.
House 1971 The goniatite Wrinkle-Layer.
Smithsonian Contribution Paleobiol., 3: 23-32, fig.1-2, pl.1-3;
Klug 2002 Quantitative stratigraphy and taxonomy of late Emsian and Eifelian ammonoids of the eastern Anti-Atlas (Morocco).
Courier Forschungsinstitut Senckenberg, 238: 1-109, 44 fig., 13 pl., 23 tab., Frankfurt.