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Noun1.Phasmidia - one of two subgroups of Nematoda used in some classification systems
Aschelminthes, Nematoda, phylum Aschelminthes, phylum Nematoda - unsegmented worms: roundworms; threadworms; eelworms
class - (biology) a taxonomic group containing one or more orders
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References in periodicals archive ?
Clave de identificacion taxonomica para los ordenes de nematodos de peces pertenecientes a la subclase Phasmidia (tomado y modificado de Yamaguti, 1961) (11).
They are further classified as Secernentea (Phasmidia) or Adenophorea (Aphasmidia).