Reference

N.B. Willumsen, F. Siemensma, P. Suhr-Jessen (1987): A multinucleate amoeba, Parachaos zoochlorellae (Willumsen,1982) comb. nov., and a proposed division of the genus Chaos into the genera Chaos and Parachaos (Gymnamoebia, Amoebidae) – Arch. Protistenkunde – 134: 303 - 314.