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.
House 1963 Devonian ammonoid successions and facies in Devon and Cornwall.
Quarterly Journal of the Geological Society of London, 119: 1-27, fig.1-8, pl.1-4; 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, Meyer & Richter 2008 Soft-tissue imprints in fossil and Recent cephalopod septa and septum formation. [Klug,C., Meyer, E.P., Richter, U. & Korn, D.]
Lethaia 10/1111, 1-16, 10 fig., 1 tab.
Ruan 1981a Devonian and earliest Carboniferous Ammonoids from Guangxi and Guizhou.
Mem. Nanjing Inst. Geol. Paleont. Academia Sinica, 15: 1-152, fig.1-102, pl.1-33; Beijing.