Authors	Year	Title
Bogoslovsky, Poslavskaya & Beliaev	1982	Nakhodki franskikh ammonoidey v Tsentralom Kazakhstanie. Paleontologicheskiy Zhurnal, 1982 (3): 35-40, fig.1-3; Moskva.
Petter	1959	Goniatites dévoniennes du Sahara. Publ. Serv. Carte géol. Algérie, n.s., Paléont., 2: 1-313, fig.1-58, pl.1-26; Alger.
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.