LOEBLICH, Alfred R.; DOUGLASS, R. C.; COLE, W. Storrs; TAPPAN, Helen; REICHEL, Manfred. Part C, Protista 2, vol. 1 & 2, v.2, Ch.5, p. 511-604. Treatise on Invertebrate Paleontology, [S. l.], 1964. DOI: 10.17161/dt.v0i0.5094. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5094. Acesso em: 2 apr. 2025.