Authors Year Title
Bogoslovsky 1981 Devonskie ammonoidei, III. Klimenii (Podotryad Gonioclymeniina).
Trudy paleont. Inst., 191: 1-122, fig.1-50, pl.1-16; Moskva.
Kullmann 2000 Ammonoid turnover at the Devonian-Carboniferous boundary.
Revue de Paléobiologie, Volume spécial 8: 169-180, 4 figs., 2 tabs., Genève.