Camallanida

The Camallanida are an order of nematodes.
 * Parasites of terrestrial and aquatic vertebrates
 * Copepods as obligatory secondary hosts

They are sometimes included in the Spirurida as a suborder Camallanina.

Notable species and genera

 * Dracunculus medinensis (human as final host) and Anguillicola crassus (eels as final host) are important species.
 * Philometra is a genus in the family Philometridae that parasitises fish.