Pugh, P.r. “A Review of the Siphonophore Species Mentioned in Haeckel’s (1888b) Challenger Monograph”. Zootaxa 4683, no. 1 (October 7, 2019): 1–32. Accessed April 3, 2025. https://mapress.com/zt/article/view/zootaxa.4683.1.1.