Tantulocarida
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{{Taxobox | color = pink | name = Tantulocarida | regnum = Animalia | phylum = Arthropoda | subphylum = Crustacea | classis = Maxillopoda | subclassis = Tantulocarida | subclassis_authority = G.A. Boxshall & R.J. Lincoln, 1983 | subdivision_ranks = Families | subdivision =
}}
Tantulocarida is a small subclass of the class Maxillopoda (ostracods, copepods, barnacles) that consists of about 1200 species. They are typically ectoparasites that infest deep-sea copepods, isopods, tanaids, and ostracods.
Members of this subclass are minute—less than 0.3 mm (0.01 inch) in length—and have a dramatic reduction in body form compared to other crustaceans, with an unsegmented sac-like thorax and a much reduced abdomen.
Tantulocarida comprises five families:
- Basipodellidae
- Basipodella atlantica
- Stygotantulus stocki (the world's smallest crustacean)
- Deoterthridae
- Amphitantulus harpinacheres
- Boreotantulus kunzi
- Cumoniscus kruppi
- Deoterthron aselloticola
- Dicrotrichura tricincta
- Tantulacus hoegi
- Doryphallophoridae
- Doryphallophora harrisoni
- Microdajidae
- Microdajus gaelicus
- Microdajus langi
- Microdajus pectinatus
- Onceroxenidae
- Onceroxenus birdi
- Onceroxenus curtus