Vorlage:Soler-Gijón, 1997

• Soler-Gijón, R. 1997. New discoveries of xenacanth sharks from the Late Carboniferous of Spain (Puertollano Basin) and Early Permian of Germany (Saar-Nahe Basin): implications for the phylogeny of xenacanthiform and anacanthous sharks. Neues Jahrbuch für Geologie and Paläontologie, Abhandlungen, 205 (1): 1–31.