Authors Year Title
Davis & Mapes 1996 Fossils of Ohio. Phylum Mollusca, Class Cephalopoda.
Ohio Division of Geological Survey, Bulletin 70, Fossils of Ohio, Chapter 14: 166-195, Fig.14-1 - Fig.14-10, Columbus, OH.
House 1965 A study in the Tornoceratidae: the succession of Tornoceras and related genera in the North American Devonian.
Phil. Transactions of the Royal Society of London, Ser.B Biological Science, No.763 Vol.250: 79-130, fig.1-19, pl.1-11; London.
House 1970 On the origin of the clymenid ammonoids.
Palaeontology, 13: 664-676, fig.1-2, pl.125-126; London.
Korn & Titus 2006 The ammonoids from the Three Forks Shale (Late Devonian) of Montana.
Fossil Record 9 (2) (2006): 198-212, 7 fig., Weinheim.
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.
Raymond 1909 The Fauna of the Upper Devonian in Montana. Part 1.-The Fossils of the Red Shales.
Ann. Carnegie Mus., 5 (1908-1909): 141-158, pl.3-8, fig.1-6; Pittsburgh, Pa.
Schindewolf 1934a Über eine oberdevonische Ammoneen-Fauna aus den Rocky Mountains.
Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, Beilage-Band, (B), 72: 331-350, fig.1-10; Stuttgart.