	Authors	Year	Title
	House	1985	Class Cephalopoda. In: Murray,J.W. (Ed.): Atlas of invertebrate macrofossils.- 114-152, fig.6.7.1-6.7.25, pl.6.7.1-6.7.127; New York.
	Ruzhencev	1952b	Pervyy predstavitel' semeystva Welleritidae iz Srednekamennougol'nykh otlozheniy Urala. Dokl. Akad. Nauk SSSR, 84 (1): 131-134, fig.1-2; Moskva.