Spirulida

Spirulida is an order of cephalopods comprising one extant species and several extinct taxa.

Fossil record

Oldest representative: Carboniferous, though contested: see Shimanskya
Oldest uncontested representative: Late Jurassic
Classification

Taxa marked with † are extinct.

Order Spirulida
**Family †Shimanskyidae
*Suborder †Groenlandibelina Khromov, 1990
**Family †Groenlandibelidae
**Family †Adygeyidae
*Suborder †Belopterina Engeser, 1998
**Family †Belemnoseidae
**Family †Belopteridae
*Suborder Spirulina Pompeckj, 1912
**Family †Spirulirostridae
**Family †Spirulirostrinidae
**Family Spirulidae