Whorl section in this group ranges from more or less circular through rectangular to oxyconic. Ribbing, if present, is weak. Suture is relatively simple, without markedly retracted suspensive lobe.
^ abWright, C. W. with Callomon, J.H. and Howarth, M.K. (1996), Mollusca 4 Revised , Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, at 69.
^Jaap KLEIN & Zdenĕk VAŠÍČEK, (2011), Fossilium Catalogus I: Animalia, Lower Cretaceous Ammonites V Desmoceratoidea, Pars 148, Weikersheim, Germany: Backhuys Publishers Margraf Publishers, 2-65.
^Fabrizio Cecca, Paolo Faraoni, Agostino Marini (1998) "Latest Hauterivian (Early Cretaceous) ammonites from Umbria-Marche Apennines (Central Italy)", Palaeontographia Italica, 85, 61-110, Pisa, Aprile 1998.
Wright C.W. with J.H. Callomon and M.K. Howarth (1996). "Mollusca 4 Revised: Cretaceous Ammonoidea". In Roger L. Kaesler (ed.). Treatise on Invertebrate Paleontology Part L. Vol. 4. Boulder, Colorado and Lawrence, Kansas: The Geological Society of America & University of Kansas Press. p. 69 – via Internet Archive.