Taxonavigation
Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta 
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata 
Subphylum: Vertebrata 
Infraphylum: Gnathostomata 
Megaclassis: Osteichthyes 
  
Superclassis/Classis: Actinopterygii 
Classis/Subclassis: Actinopteri 
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii 
Subdivisio: Percomorphaceae
Series: Eupercaria
Ordo: Perciformes
Subordo: Xiphioidei
Familiae (3): 
Istiophoridae - 
Xiphiidae - 
?†Blochiidae
References
- Collette, B.B.; McDowell, J.R.; Graves J.E. 2006: Phylogeny of recent billfishes (Xiphioidei). Bulletin of marine science, 79(3): 455–468. PDF