Spirulida

Spirulida Temporal range: Late Jurassic–Recent* PreꞒ Ꞓ O S D C P T J K Pg N
Spirula spirula
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Superorder:	Decapodiformes
Order:	Spirulida Stolley, 1919
Suborders
†Groenlandibelina †Belopterina Spirulina

Spirulida is an

• Oldest representative: Carboniferous, though contested: see Shimanskya
• Oldest uncontested representative: Late Jurassic^[1]

Classification

• 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

References