Synonym: Hughmilleroidea Kjellesvig-Waering 1951
Parent taxon: Diploperculata according to J. C. Lamsdell 2025
See also Braddy et al. 2002, Brauckmann et al. 2003, Dunlop et al. 2013, Dunlop et al. 2020, Lamsdell et al. 2013 and Tetlie et al. 2007
Sister taxa: Adelophthalmoidea, Carcinosomatoidea, Pterygotioidea, Waeringopteroidea
Subtaxa: Ciurcopteridae Herefordopteridae Hughmilleriidae Hunanopteridae Pterygotidae Slimoniidae
Ecology: nektobenthic carnivore
Distribution:
• Devonian of Algeria (1 collection), Australia (5), Canada (6: New Brunswick, Nova Scotia, Quebec), China (2), Czechia (6), France (1), Germany (4), Norway (1), Poland (4), the Russian Federation (4), Spain (1), Ukraine (1), the United Kingdom (3), United States (6: Florida, Indiana, New York, Ohio, Wyoming)
• Silurian to Devonian of Poland (1)
• Silurian of Australia (2), Bolivia (1), Canada (3: New Brunswick, Ontario), China (5), Czechia (7), Estonia (2), Libya (2), Morocco (1), Norway (6), Poland (3), Spain (1), Sweden (2), Ukraine (2), the United Kingdom (16), United States (25: Florida, Indiana, Maryland, New York, Ohio, Pennsylvania, West Virginia), Vietnam (2)
Total: 126 collections including 187 occurrences