Authors Year Title
Liang & Wang 1988 Carboniferous Cephalopods of Xinjiang, NW China.
In: Wiedmann,J. & Kullmann,J. (eds.), Cephalopods - Present and Past, 553-575, 2 text-figs., 1 tabl., 6 pls., Stuttgart.
Liang & Wang 1991 Carboniferous cephalopods of Xinjiang.
Paleontologica Sinica, n.ser.B, 180: 1-171, fig.1-104, pl.1-40; Nanjing.
Nassichuk 1975 Carboniferous ammonoids and stratigraphy in the Canadian Arctic Archipelago.
Bulletin of the Geological Survey of Canada, 237: 1-240, fig.1-57, tab.1-33, pl.1-18; Ottawa.