title: Rhizostomatidae
text: # Rhizostomatidae
  
  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
  * Rhizostoma octopusGenus 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 †Essexella
  * Genus †Simplicibrachia, is known from fossils in the Ypresian-aged Monte Bolca lagerstatten.
  