BOUCOT, A. J.; PITRAT, Charles W.; JOHNSON, J. G.; STATON, R. D. Part H, Brachiopoda, vol. 1 & 2, ch. 6, p. 632-728. Treatise on Invertebrate Paleontology, [S. l.], 1965. DOI: 10.17161/dt.v0i0.5548. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5548.. Acesso em: 6 may. 2024.