Category:Amphionidacea
Domain: Eukaryota • Regnum: Animalia • Subregnum: Eumetazoa • Cladus: Bilateria • Superphylum: Protostomia • Cladus: Ecdysozoa • Phylum: Arthropoda • Subphylum: Crustacea • Classis: Malacostraca • Subclassis: Eumalacostraca • Superordo: Eucarida • Ordo: Amphionidacea Williamson, 1973

Wikispecies has an entry on:
- Included families (for ITIS & WoRMS, ):
- Amphionididae