Authors Year Title
DeBaets, Klug & Plusquellec 2010 Zlíchovian faunas with early ammonoids from Morocco and their use for the correlation of the eastern Anti-Atlas and the western Dra Valley
Bulletin of Geosciences, 85, issue 2: 317 - 352;
Klug 2001 Early Emsian ammonoids from the eastern Anti-Atlas (Morocco) and their succession.
Paläontologische Zeitschrift, 74: 479-515, 21 figs., Stuttgart.
Ruan & He 1974 Devonian Ammonoids. In: A handbook of the stratigraphy and palaeontology in Southwest China. [In Chinese].
Nanjing Inst. Geol. Paleont., Acad. Sinica: 238-239, pl.119; Nanjing.
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.
Ruan 1996 Zonation and distribution of the early Devonian primitive ammonoids in South China.
In: Wang Hongzhen & Wang Xunlian: Centennial Memorial Volume Sun Yunzhu: Paleontology and Stratigraphy, 104-112, pl.14.1-2, text-fig.14.1-2, tabl.14.1
Xu & Wei 1977 Fossil Atlas of South-Central China, part 2, Cephalopoda. [In Chinese.]
Yichang Institute of Geology and Mineral Resources 1977:   p.537-582, pl.204-218, (Geological Publishing House).