CAMPBELL, Arthur Shackelton; MOORE, Raymond C. Part D, Protista 3, Ch. 2, p. 30-100. Treatise on Invertebrate Paleontology, [S. l.], 1954. DOI: 10.17161/tip.v0i0.5100. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5100. Acesso em: 30 mar. 2025.