Vampyromorphida

Vampyromorphida is an order of cephalopods. There are one extant species (Vampyroteuthis infernalis) and several extinct taxa in it.

Classification
Order Vampyromorphida
?Suborder †Kelaenina
Family †Muensterellidae
Suborder †Prototeuthina
Family †Loligosepiidae  
Family †Plesioteuthididae  
Family †Geopeltididae  
Family †Leptotheuthididae  
Family †Lioteuthididae 
Family †Mastigophoridae 
Suborder †Mesoteuthina
Family †Palaeololiginidae
Subfamily †Teudopseinae
Subfamily †Palaeololigininae
Family †Trachyteuthididae
Subfamily †Trachyteuthidinae
Subfamily †Actinosepiinae
Suborder Vampyromorphina
Family Vampyroteuthidae

References

The Taxonomicon: Order Vampyromorphida 
Mikko's Phylogeny Archive: Vampyromorpha 

Category:Cephalopods