Class Cephalopoda Cuvier, 1795 - cephalopods
Subclass Coleoidea Bather, 1888
Superorder Decembrachiata Winckworth, 1932
see Superorder Decapodiformes Young, Vecchione & Donovan, 1998
1 Order Spirulida Pompeckj, 1912
2 Order Sepiida Gray, 1849
3 Order "Oegopseida" d'Orbigny, 1845
see Suborder Oegopsina Orbigny, 1845
4 ?Order †Boletzkyida Bandel, Reitner & Stürmer, 1985