MOORE, Raymond C.; STRIMPLE, H. L.; FAY, R. O.; LANE, N. Gary; SPRINKLE, James. Part T, Echinodermata 2, vol. 1-3, ch. 5, p. 520 - 630. Treatise on Invertebrate Paleontology, [S. l.], 1978. DOI: 10.17161/dt.v0i0.5646. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5646. Acesso em: 30 mar. 2025.