COX, L. R. Part I, Mollusca 1, ch. 2, p. 184-169. Treatise on Invertebrate Paleontology, [S. l.], 1960. DOI: 10.17161/dt.v0i0.5584. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5584.. Acesso em: 4 may. 2024.