Tantulocarida

Tantulocarida
Microdajus sp.
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Superclass: Multicrustacea
Class: Tantulocarida
G. A. Boxshall & R. J. Lincoln, 1983 
Families

Tantulocarida is a highly specialised group of parasitic crustaceans that consists of about 33 species, treated as a class in superclass Multicrustacea. They are typically ectoparasites that infest copepods, isopods, tanaids, amphipods and ostracods.