• Tardigrada
  Tardigrada

  A phylum of microscopic ecdysozoan invertebrates, closely related to ARTHROPODS. Members exhibit anabiosis and cryptobiosis, dormant states where metabolic activity is reduced...<br/>Year introduced: 2011
  MeSH
• Annelida
  Annelida

  A phylum of metazoan invertebrates comprising the segmented worms, and including marine annelids (POLYCHAETA), freshwater annelids, earthworms (OLIGOCHAETA), and LEECHES. Only...<br/>
  MeSH
• Porifera
  Porifera

  The phylum of sponges which are sessile, suspension-feeding, multicellular animals that utilize flagellated cells called choanocytes to circulate water. Most are hermaphroditi...<br/>
  MeSH

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