Rhizostomatidae is a family of cnidarians in the class Scyphozoa.
Genera and species According to the World Register of Marine Species, 11 extant species are in four extant genera within this family: Genus Eupilema Eupilema inexpectata Pages, Gili & Bouillon, 1992 Genus Nemopilema Nemopilema nomurai Kishinouye, 1922 Genus Rhizostoma Cuvier, 1800 Rhizostoma luteum (Quoy & Gaimard, 1827) Rhizostoma octopus (Linnaeus, 1758) Rhizostoma pulmo (Macri, 1778) Genus Rhopilema Haeckel, 1880 Rhopilema esculentum Kishinouye, 1891 Rhopilema hispidum Rhopilema nomadica Rhopilema rhopalophora (Haeckel) Rhopilema rhopalophorum Haeckel, 1880 Rhopilema verrilli Extinct taxa
Genus †Marejellia Žalohar, Gašparič & Hitij, 2025 - Middle Miocene of Slovenia (Tunjice Hills lagerstatte) Genus †Simplicibrachia Broglio Loriga & Sala Manservigi, 1973 - Ypresian of Italy (Monte Bolca lagerstatte)
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