The
Camallanida are sometimes included herein as a
suborder, and the
Drilonematida are sometimes placed here as a
superfamily. There are doubts about the internal systematics of the Spirurida, and some groups placed herein might belong to other spirurian or even
secernentean lineages. The following superfamilies are at least provisionally placed in the Spirurida: •
Acuarioidea •
Aproctoidea •
Diplotriaenoidea •
Filarioidea •
Gnathostomatoidea •
Habronematoidea •
Physalopteroidea •
Rictularioidea •
Spiruroidea •
Thelazioidea == References ==