Chromadorea

Chromadorea
Anisakid larvae in the body cavity of an Atlantic herring
Scientific classification
Kingdom: Animalia
Phylum: Nematoda
Class: Chromadorea
Inglis, 1983
Subclass: Chromadoria
Pearse, 1942

The Chromadorea are a class of the roundworm phylum, Nematoda. They contain a single subclass (Chromadoria) and several orders. With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several clades, or abandoned if they are found to constitute a single radiation.

Formerly, they were treated as a subclass in the paraphyletic "Adenophorea" assemblage, which has been mostly abandoned by modern authors. It is also suspected that the Chromadorea may not be monophyletic as delimited here; at least the Monhysterida seem to be a distinct and far more ancient lineage than the rest.