Authors	Year	Title
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.
Miller	1938	Devonian ammonoids of America. Special Papers, Geological Society of America, 14: 1-262, fig.1-41, pl.1-39; Baltimore.
Münster	1832	Ueber die Planuliten und Goniatiten im Uebergangs-Kalk des Fichtelgebirges. 1-38, pl.1-6; Bayreuth (Birner).