Authors Year Title
Chlupac & Turek 1983 Devonian goniatites from the Barrandian area, Czechoslovakia.
Rozpravy Ustredniho ustavu geologického, 46: 1-159, fig.1-30, pl.1-32; Praha.
Klug, Korn & Reisdorf 2000 Ammonoid and conodont stratigraphy of the late Emsian to early Eifelian (Devonian) at the Jebel Ouaoufilal (near Taouz, Tafilalt, Morocco).
Travaux de l'Institut Scientifique, Rabat. Série Géologie & Géographie Physique, 20: 45-56, 4 text-figs., 2 pls., Rabat.
Klug 2001 Life cycles of some Devonian ammonoids.
Lethaia, 34: 215-233, 12 figs., 1 tab., Oslo.
Klug & Korn 2002 Occluded umbilicus in the Pinacitinae (Devonian) and its palaeoecological implications.
Palaeontology, 45: 917-931, 6 fig., 1 pl., London.
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.