Rhopalonematidae
Encyclopedia
Rhopalonematidae are a family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of jellyfish in the order
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

 Trachymedusae
Trachymedusae
Trachymedusae are an order in the cnidarian class Hydrozoa. They contain some 50 species, divided among about 30 genera and 5 families, of which the Rhopalonematidae are by far the most diverse. They only reproduce sexually as medusa, never forming polyps...

. The family comprises 16 genera and about 35 species.

Genera

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  • Aglantha
  • Aglaura
  • Amphogona
  • Arctapodema
  • Benthocodon
  • Colobonema
  • Crossota
    Crossota
    Crossota is a genus of jellyfish of the family Rhopalonematidae. The genus comprises five species. Unlike most hydromedusae, these jellyfish do not have a sessile stage. Rather, they spend their entire lives in the water column as plankton...

  • Pantachogon

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  • Persa
  • Ransonia
  • Rhopalonema
  • Sminthea
  • Stauraglaura
  • Tetrorchis
  • Vampyrocrossota
    Vampyrocrossota
    Vampyrocrossota is a genus of jellyfish of the family Rhopalonematidae. The genus only contains one species. Unlike many hydromedusae, these jellyfish do not have a sessile stage. Rather, they spend their entire lives in the water column as plankton. The genus Vampyrocrossota is only known from the...

  • Voragonema Naumov, 1971

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