MOORE, Raymond C.; STRIMPLE, H. L. Part T, Echinodermata 2, vol. 1-3, ch. 7, p. 760 - 812. Treatise on Invertebrate Paleontology, [S. l.], 1978. DOI: 10.17161/dt.v0i0.5648. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5648. Acesso em: 30 mar. 2025.