Bohn, J. M., & Heß, M. (2014). The Antarctic holothurian genus Echinopsolus Gutt, 1990 (Dendrochirotida, Cucumariidae): brood pouches, spermatozoa, spermatozeugmata and taxonomic implications. Zootaxa, 3841(4), 573–591. https://doi.org/10.11646/zootaxa.3841.4.7