Order Spirulida Stolley 1919 (mollusk)
Parent taxon: Decabrachia according to R. Hoffmann et al. 2022
See also Doyle et al. 1994 and Fuchs et al. 2013
Sister taxa: Belemnitida, Diplobelida, Longibelus, Myopsida, Oegopsida, Sepiida, Sepiolida, Teuthida
Subtaxa: Belemnoseidae Belopteridae Groenlandibelidae Spirulidae Spirulirostridae Spirulirostrinidae Vasseuriidae
Ecology: fast-moving nektonic carnivore
Distribution:
• Quaternary of Australia (1 collection), Morocco (1)
• Miocene of Germany (2)
• Eocene of Italy (4), the United Kingdom (1), United States (2: Alabama, Mississippi)
• Paleocene of Austria (1), the Netherlands (1)
• Cretaceous of Canada (1: British Columbia), Greenland (3), the Russian Federation (1)
Total: 18 collections including 19 occurrences