Spirulida

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