[1]
Loeblich, A.R. et al. 1964. Part C, Protista 2, vol. 1 & 2, v.1, Ch.4, p. 436-510.
Treatise on Invertebrate Paleontology
. (Jan. 1964). DOI:
https://doi.org/10.17161/dt.v0i0.5093
.