↑Sars, G.O. (1878) Mollusca regionis arcticae Norvegiae: 215
↑Bandel, K. (1994) Comparison of Upper Triassic and Lower Jurassic gastropods from the Peruvian Andes (Pucará group) and the Alps (Cassian formation). Palaeontographica. (A)233: 127−160, pls. 1−5.