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Concept information

Eukaryota > Animals > Invertebrates > Cnidaria > Hydrozoa

Preferred term

Hydrozoa  

Type

  • Topical Descriptor

Broader concept

Narrower concepts

Entry terms

  • Hydrozoan
  • Hydrozoans

Note

  • do not confuse entry term LIRIOPE TETRAPHYLLA with LIRIOPE PLANT

Scope note

  • A class in the phylum CNIDARIA which alternates between polyp and medusa forms during their life cycle. There are over 2700 species in five orders.

History note

  • 2003; use HYDRA 1997-2000, use CNIDARIA 2001-2002; for PHYSALIA & PORTUGESE MAN-OF-WAR use CNIDARIA 1998-2002

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URI

http://www.yso.fi/onto/mesh/D037402

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