Spirulida

 ( Cephalopod Orders ) 

Spirulida is an order of comprising one extant taxon species ( Spirula spirula) and several extinction taxon.

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

• 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 Spirula

• Tree of Life: Spirulida
• The Taxonomicon: Order Spirulida
• Mikko's Phylogeny Archive: Spirulida