Authors Year Title
Andrianov 1966 Verkhnepaleozoiskie otlozhenia zapadnogo Verkhoiania (Tompo-etchiskoe mezhdurechie).
1-131, 28 text-figs., 3 pls., Moskva (Nauka).
Andrianov 1985 Permskie i nekotorye kamennougol'nye ammonoidei Severo-Vostoka Azii.
Novosibirsk Izdatel'stvo Nauka, Sibirskoe Otdelenie, 1985: 1-180, fig.1-54, pl.A,B,1-21; Novosibirsk.
Nassichuk, Furnish & Glenister 1965 The Permian ammonoids from Arctic Canada.
Bulletin of the Geological Survey of Canada, 131: 1-56, fig.1-17, tab.1-7, pl.1-5; Ottawa.
Ruzhencev 1961 Pervye ammonoidei iz Permskikh otlozheniy Verkhoyan'ya.
Paleontologicheskiy Zhurnal, 1961 (2): 50-63, fig.1-10; Moskva.