MOORE, Raymond C.; STRIMPLE, H. L. Part T, Echinodermata 2, vol. 1-3, ch. 6, p. 631 - 759. Treatise on Invertebrate Paleontology, [S. l.], 1978. DOI: 10.17161/dt.v0i0.5647. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5647.. Acesso em: 2 may. 2024.