09-07-2021-0037 - Cephalocarida crustacean crustacea

 The Cephalocarida are a class in the subphylum Crustacea comprising only 12 benthic species. They were discovered in 1955 by Howard L. Sanders,^[1] and are commonly referred to as horseshoe shrimps. They have been grouped together with the Remipedia in the Xenocarida. Although a second family, Lightiellidae, is sometimes used, all cephalocaridans are generally considered to belong in just one family: Hutchinsoniellidae. Though no fossil record of cephalocaridans has been found, most specialists believe them to be primitive among crustaceans.

Cephalocarida
Hutchinsoniella macracantha
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Cephalocarida
Order:	Brachypoda
Family:	Hutchinsoniellidae Sanders, 1955
Genera
Chiltoniella Hampsonellus Hutchinsoniella Lightiella Sandersiella
Synonyms
Lightiellidae Jones 1961

Taxonomy[edit]

• Class Cephalocarida Sanders 1955^[2]
• Order Brachypoda Birshteyn 1960
• Family Hutchinsoniellidae Sanders 1955
• Genus Chiltoniella Knox & Fenwick 1977
  • Chiltoniella elongata Knox & Fenwick 1977
• Genus Hampsonellus Hessler & Wakabara 2000
  • Hampsonellus brasiliensis Hessler & Wakabara 2000
• Genus Hutchinsoniella Sanders 1955
  • Hutchinsoniella macracantha Sanders 1955
• Genus Lightiella Jones 1961
  • Lightiella floridana McLaughlin 1976
  • Lightiella incisa Gooding 1963
  • Lightiella magdalenina Carcupino et al. 2006
  • Lightiella monniotae Cals & Delamare Deboutteville 1970
  • Lightiella serendipita Jones 1961
• Genus Sandersiella Shiino 1965
• Sandersiella acuminata Shiino 1965
• Sandersiella bathyalis Hessler & Sanders 1973
• Sandersiella calmani Hessler & Sanders 1973
• Sandersiella kikuchii Shimomura & Akiyama 2008

Extant Arthropoda classes by subphylum
Kingdom Animalia Subkingdom Eumetazoa (unranked) Bilateria (unranked) Protostomia Superphylum Ecdysozoa
Chelicerata	Pycnogonida (sea spiders) Euchelicerata Xiphosura (horseshoe crabs) Arachnida (spiders, scorpions, ticks, mites)
Myriapoda	Chilopoda (centipedes) Diplopoda (millipedes) Pauropoda (pauropods) Symphyla (symphylans or garden centipedes)
Pancrustacea (Crustacea + Hexapoda)	Oligostraca Ostracoda (seed shrimps) Mystacocarida¹ Ichthyostraca Pentastomida (tongue worms)¹ Branchiura (fish lice)¹ Altocrustacea Multicrustacea Malacostraca (woodlice, shrimps, crayfish, lobsters, crabs) Hexanauplia (copepods¹, barnacles and relatives and tantulocaridans¹) Allotriocarida Cephalocarida (horseshoe shrimps) Branchiopoda (fairy, tadpole, clam shrimps, water fleas) Labiocarida Remipedia Hexapoda Protura (coneheads)² Collembola (springtails)² Diplura (two-pronged bristletails)² Insecta (insects)

https://en.wikipedia.org/wiki/Cephalocarida