Authors Year Title
DeBaets, Klug & Korn 2013 Emsian Ammonoidea and the age of the Hunsrück Slate (Rhenish Mountains, Western Germany).
De Baets, K., Klug, C., Korn., D., Bartels, C., Poschmann, M. Palaeontographica, Abteilung A, 299:1-113
DeBaets, Goolaerts & Jansen 2013 The first record of Early Devonian ammonoids from Belgium and their stratigraphic significance
De Baets K, Goolaerts S, Jansen U, Rietbergen T & Klug C. Geologica Belgica (2013) 16/3: 148-156;