CAMPBELL, Arthur Shackelton; MOORE, Raymond C. Part D, Protista 3, Ch.3, p .101-163. Treatise on Invertebrate Paleontology, [S. l.], 1954. DOI: 10.17161/tip.v0i0.5101. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5101. Acesso em: 30 mar. 2025.