Enoplea are a class of the roundworms. Most are free-living, but the group includes (at least as delimited here) the order

Order (biology)

In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

 Trichurida, which includes whipworm

Whipworm

The human tapworm is a roundworm, which causes trichuriasis when it infects a human large intestine. The name whipworm refers to the shape of the worm; they look like whips with wider "handles" at the posterior end.-Life cycle:The female T. trichiura produces 2,000–10,000 single celled eggs per day...

s and trichina worms.

The anterior sensory structures (amphid

Amphid

Amphids are inervated invaginations of cuticle in nematodes. They are usually found in the anterior region of the animal, at the base of the lips. Amphids are the principal chemosensory organs of nematodes. Each amphid is made up of 12 sensory neurons with ciliated dendrites....

s) are well developed, while the posterior ones (phasmid

Phasmid (nematode)

Phasmids are unicellular sensilia in the lateral tail region of certain species of nematodes. They are similar in their structure to amphid sensilla, but smaller. Phasmid neurons were recently shown to function in modulation of chemorepulsion behavior....

s) are not.

Traditionally, the Enoplea were treated as a subclass

Class (biology)

In biological classification, class is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order...

 Enoplia in the "Adenophorea

Adenophorea

Adenophorea or Aphasmidia was a class of nematodes . It has been by and large abandoned by modern taxonomy, because there is strong evidence for it being a motley paraphyletic group of unrelated lineages of roundworms....

" assemblage, alongside the Chromadorea. With the dismantling of this artificial group, the two subclasses were upranked to classes of their own. As it appears, the Enoplea contain two distinct lineages, as has long been suspected. These have been reinstated as subclasses Dorylaimia and Enoplia

Enoplia

Enoplea are a class of the roundworms. Most are free-living, but the group includes the order Trichurida, which includes whipworms and trichina worms....

. But it may well be that they are just as distant from each other as from the Chromadorea, necessitating a further split of the group.

Orders

• Subclass Enoplia
  Enoplia
  Enoplea are a class of the roundworms. Most are free-living, but the group includes the order Trichurida, which includes whipworms and trichina worms....
  
  
  • Order Enoplida
  • Order Isolaimida
  • Order Oncholaimida
    Oncholaimida
    Oncholaimida is an order of nematodes made up of a single superfamily, Oncholaimoidea. They are mainly marine and brackish water forms. They supposedly have predaceous and carnivorous feeding habits. Their amphids are pocket-like with oval apertures. The stoma is vase-like with walls that are...
    
    
  • Order Stichosomida
  • Order Triplonchida
  • Order Tripylida
• Subclass Dorylaimia
  • Order Dioctophymida
  • Order Dorylaimida
    Dorylaimida
    Dorylaimida is an order of nematodes.-Families:...
    
    
  • Order Mermithida
    Mermithida
    Mermithida is an order of nematode worms. The order includes two families, and most members are endoparasites on arthropods. The morphological characteristic of the order is the presence of a stichosome....
    
    
  • Order Mononchida
  • Order Trichocephalida (formerly Trichurida or Trichinellida)

The order Marimermithida is of uncertain affiliations.

External links

• NeMys Enoplia taxon page