Parent taxon: Diploperculata according to J. C. Lamsdell 2025
See also Dunlop et al. 2013, Dunlop et al. 2020, Lamsdell et al. 2013 and Lamsdell et al. 2013
Sister taxa: Carcinosomatoidea, Pterygotioidea, Pterygotoidea, Waeringopteroidea
Subtaxa: Adelophthalmidae Nanahughmilleriidae Parahughmilleriidae Pittsfordipteridae
Type: Adelophthalmidae
Ecology: nektobenthic carnivore
Distribution:
• Permian of United States (3: Kansas, Oklahoma, Pennsylvania collections)
• Carboniferous to Permian of China (1)
• Carboniferous of Belgium (6), Canada (2: New Brunswick, Nova Scotia), Czechia (3), France (3), Germany (3), Italy (1), Kazakhstan (1), the Netherlands (2), Portugal (1), the Russian Federation (2), Spain (2), Ukraine (2), the United Kingdom (5), United States (8: Illinois, Kansas, Nebraska, New Mexico, Pennsylvania)
• Devonian of Australia (1), Belgium (1), Canada (1: New Brunswick), China (1), Germany (3), the Russian Federation (7), the United Kingdom (1), United States (2: Pennsylvania, Pennsylvania )
• Silurian of Estonia (1), Norway (4), the United Kingdom (6), United States (9: Maryland, New York, Pennsylvania, West Virginia)
Total: 82 collections including 94 occurrences