Spirulida is an order of cephalopods comprising one extant species (Spirula spirula) 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 <small>Khromov, 1990</small>
- Family †Groenlandibelidae
- Family †Adygeyidae
- Suborder †Belopterina <small>Engeser, 1998</small>
- Family †Belemnoseidae
- Family †Belopteridae
- Suborder Spirulina <small>Pompeckj, 1912</small>
- Family †Spirulirostridae
- Family †Spirulirostrinidae
- Family Spirulidae
References
- Tree of Life: Spirulida
- The Taxonomicon: Order Spirulida
- Mikko's Phylogeny Archive: Spirulida