Authors Year Title
Clarke 1899b Notes on the early stages of certain goniatites.
New York State Museum Annual Report, 50: 165-169, fig.1-6; Albany.
Flower 1943 Werneroceras in the Devonian of New York.
Bulletin of the American Paleontological Society, 28: 14-21, pl.1; Ithaca, N.Y.
Hall 1879 Descriptions of the Gasteropoda, Pteropoda and Cephalopoda of the Upper Helderberg, Hamilton, Portage and Chemung Groups.
Paleontology of New York, 5 (2): 1-492, pl.1-113; Albany.
House 1962 Observations on the ammonoid succesion of the North American Devonian.
Journal of Paleontology, 36: 247-284, fig.1-15, tab.1-3, pl.43-48; Tulsa, Okla.
House 1978 Devonian amonoids from the Appalachians and their bearing on international zonation and corelation.
Special Papers Paleontology, 21: 1-70, fig.1-12, pl.1-10; London.
Klug, Korn & Reisdorf 2000 Ammonoid and conodont stratigraphy of the late Emsian to early Eifelian (Devonian) at the Jebel Ouaoufilal (near Taouz, Tafilalt, Morocco).
Travaux de l'Institut Scientifique, Rabat. Série Géologie & Géographie Physique, 20: 45-56, 4 text-figs., 2 pls., Rabat.
Klug 2001 Life cycles of some Devonian ammonoids.
Lethaia, 34: 215-233, 12 figs., 1 tab., Oslo.
Korn & Klug 2002 Ammoneae Devonicae.
In: Fossilium Catalogus, I: Animalia (edit. Riegraf,W.), Pars 138:
375 p., 238 fig., 4 tab., Leiden (Backhuys Publ.).
Kullmann 1960 Die Ammonoidea des Devon im Kantabrischen Gebirge (Nordspanien).
Abhandlungen der Akademie der Wissenschaften und der Literatur in Mainz, mathematisch-naturwissensch.Klasse,1960 (7):1-105 [455-559], 20 fig.,9 pl.; (Steiner) Wiesbaden.
Miller 1938 Devonian ammonoids of America.
Special Papers, Geological Society of America, 14: 1-262, fig.1-41, pl.1-39; Baltimore.
Petter 1959 Goniatites dévoniennes du Sahara.
Publ. Serv. Carte géol. Algérie, n.s., Paléont., 2: 1-313, fig.1-58, pl.1-26; Alger.