1. Aptian ammonites from the Argentinian Austral Basin. The Subfamily Helicancylinae Hyatt, 1984;Aguirre-Urreta;Annals of the South African Museum,1986
2. Lower Cretaceous deposits in California and Oregon;Anderson;Special Paper of the Geological Society of America,1938
3. Mesozoic Ammonoidea;Arkell,1957
4. Representatives in Romania of the genera Dissimilites Sarkar, 1955, and Toxoceratoides Spath, 1924 (Ancyloceratina, Ammonoidea);Avram;Acta Paleontologica Romaniae,2001
5. Descriptions de représentants nouveaux ou peu connus de la famille des Hemihoplitidae Spath, 1924 (Barrémien supérieur, Sud-Est de la France) : conséquences taxinomiques et phylétiques;Bert;Annales du Museum d’Histoire Naturelle de Nice,2006