Bohn, Jens Michael, and Martin Heß. 2014. “The Antarctic Holothurian Genus Echinopsolus Gutt, 1990 (Dendrochirotida, Cucumariidae): Brood Pouches, Spermatozoa, Spermatozeugmata and Taxonomic Implications”. Zootaxa 3841 (4). Auckland, New Zealand:573–591. https://doi.org/10.11646/zootaxa.3841.4.7.