Crangonyctidae

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Cladus: Pancrustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Peracarida
Ordo: Amphipoda
Subordo: Gammaridea
Superfamilia: Crangonyctoidea

Familia: Crangonyctidae
Genera: Amurocrangonyx – Bactrurus – Crangonyx – Lyurella – Palaeogammarus – Stygobromus – Stygonyx – Synurella
References

Sidorov, D.A.; Holsinger, J.R. 2007: Amurocrangonyx, a new genus of subterranean amphipod (Crangonyctidae) from the Russian Far East, with a redescription of the poorly known Crangonyx arsenjevi and comments on biogeographic relationships. Journal of Crustacean Biology, 27(4): 660–669. BioOne

Crangonyctidae is a family of cave-dwelling freshwater amphipod crustaceans. It contains the following genera:[1]

Amurocrangonyx Sidorov & Holsinger, 2007 [2]
Bactrurus Hay, 1902
Crangonyx Bate, 1859
Lyurella Derzhavin, 1939
† Palaeogammarus Zaddach, 1864
Stygobromus Cope, 1872
Stygonyx Bousfield & Holsinger, 1989

References

J. Lowry (2011). "Crangonyctidae". World Register of Marine Species. Retrieved February 26, 2011.
Dmitry A. Sidorov & John R. Holsinger (2007). "Amurocrangonyx, a new genus of subterranean amphipod (Crangonyctidae) from the Russian Far East, with a redescription of the poorly known Crangonyx arsenjevi and comments on biogeographic relationships". Journal of Crustacean Biology. 27 (4): 660–669. doi:10.1651/S-2817R.1.