Straehler-Pohl, I., C. L. Widmer, and A. C. Morandini. “Characterizations of Juvenile Stages of Some Semaeostome Scyphozoa (Cnidaria), With Recognition of a New Family (Phacellophoridae)”. Zootaxa, vol. 2741, no. 1, Jan. 2011, pp. 1–37, doi:10.11646/zootaxa.2741.1.1.