n. pl. [Gr. askos, bag; helmins, worm]
A taxon (phylum) of the animal kingdom, when recognized, that includes the (classes) Rotifera, Gastrotricha, Kinorhyncha or Echinodera, Nematomorpha or Gordiacea, and Nemata (=Nematoda).

Online Dictionary of Invertebrate Zoology. . 2005.

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