Onychophora
  有爪動物門
  On·y·choph·o·ra n. pl.  Zool. Malacopoda.
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  Onychophora
       n : enigmatic small elongated wormlike terrestrial invertebrates
           of damp dark habitats in warm regions; distinct from the
           phylum Annelida; resemble slugs with legs and are
           sometimes described as the missing link between
           arthropods and annelids [syn: class Onychophora]