WELLS, John W.; STUMM, Erwin C.; HILL, Dorothy. Part F, Coelenterata, Ch. 4, p. 328-437. Treatise on Invertebrate Paleontology, [S. l.], 1956. DOI: 10.17161/dt.v0i0.5539. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5539.. Acesso em: 27 apr. 2024.