Parent taxon: Decabrachia according to R. Hoffmann et al. 2022
See also Nixon 2011
Sister taxa: Belemnitida, Diplobelida, Longibelus, Oegopsida, Sepiida, Sepiolida, Spirulida, Teuthida, Uluciala
Subtaxa: Loliginidae
Ecology: nektonic carnivore
Distribution:
• Oligocene of the Russian Federation (1 collection)
• Triassic of Italy (1)
• Namurian of Malaysia (4)
• Carboniferous of China (12), Greece (2), the Russian Federation (6), Spain (7), the United Kingdom (5), United States (5: Alabama, Utah, Virginia)
• Devonian of Australia (41), Austria (35), Bulgaria (10), Canada (73: Northwest Territories, Nunavut, Yukon), China (2), Czechia (3), Germany (12), Greece (5), Italy (1), Morocco (10), New Zealand (1), Spain (5), United States (51: Alaska, Nevada, Texas)
• Silurian to Devonian of Australia (11), Italy (1)
• Silurian of Australia (11), Austria (4), Canada (1: Yukon Territory), Czechia (8), Estonia (2), Italy (2), the Russian Federation (1), Sweden (48), the United Kingdom (6), United States (15: Nevada, Ohio)
Total: 402 collections including 435 occurrences