†order Ateleaspidiformes Tarlo 1967 (vertebrate)
Petromyzontida - Cephalaspidiformes
Parent taxon: Osteostraci according to O. Tinn and T. Märss 2018
See also Sepkoski 2002
Sister taxa: Aachenaspis, Fieldingaspis, Meelaidaspis, Ohesaareaspis, Tuvaspis, Yvonaspis, Camptaspis, Zenaspidida, Benneviaspidiformes, Benneviaspidida, Tremataspidiformes, Tremataspidida, Waengsjoeaspis, Cornuata, Thyestiida
Subtaxa: Ateleaspididae Kalanaspididae
Ecology: fast-moving nektonic carnivore
Distribution:
• Devonian of Canada (1: Nunavut collection)
• Silurian of Canada (1: Nunavut), Estonia (1), North Atlantic (1), Norway (3), the United Kingdom (10)
Total: 17 collections including 21 occurrences