Parent taxon: Vertebrata according to R. van der Laan 2019
See also Nelson et al. 2016
Sister taxa: Acrania, Agnatha, Ammopus, Apedolepis, Artenolepis, Cephalaspidomorpha, Craniota, Cyclostomata, Cyclostomi, Eosaurus, Eotetrapoda, Galeaspida, Gnathostomata, Herpetichthyes, Hoplichnus, Hypichthyes, Lepidotosaurus, Mannodon, Myzichthyes, Ophis, Osteostracomorphi, Ostracophori, Pachycardia, Palaeoxyris, Petromyzontomorphi, Protetrapoda, Pteraspidomorphi, Saurornia, Thelodontomorphi, Thoracophis, Tidaeus, Toxichnus, Zamponiopteron, Myxinomorphi, Conodontomorpha, Myllokunmingiiformes, Coluber arcuatus
Subtaxa: Jamoytiiformes
Ecology:
Distribution:
• Devonian of Canada (1: Quebec collection), the United Kingdom (1)
• Silurian of the United Kingdom (1)
Total: 3 collections including 4 occurrences