Authors Year Title
Becker 1993 Stratigraphische Gliederung und Ammonoideen-Faunen im Nehdenium (Oberdevon II) von Europa und Nord-Afrika.
Courier Forschungsinstitut Senckenberg, 155: 1-405, fig.1-98, pl.1-26; Frankfurt am Main.
House & Price 1985 New late Devonian genera and species of tornoceratid goniatites.
Palaeontology, 28 (1): 159-188, fig.1-9, pl.16-20; London.
Korn & Klug 2002 Ammoneae Devonicae.
In: Fossilium Catalogus, I: Animalia (edit. Riegraf,W.), Pars 138:
375 p., 238 fig., 4 tab., Leiden (Backhuys Publ.).
Montesinos & Sanz_López 1999 Falcitornoceras and Cheiloceras (Ammonoidea, Goniatitida) from the lower Famennian of the Iberian Peninsula and their biostratigraphic applications.
Newsletters on Stratigraphy, 37: 103-139, 11 figs., 3 Tab., Berlin, Stuttgart.