Parent taxon: Corynexochida according to S. J. Wernette et al. 2020
See also Adrain 2011 and Sepkoski 1998
Sister taxa: Brylyella, Cheilocephalidae, Chondagraulos, Corynexochidacea, Corynexochina, Corynexochoidea, Dolichometopidae, Granularapis, Granularaspidae, Hemibarrandiidae, Hunnanocephalus, Illaenidae, Illaenoidea, Leiostegiina, Phillipsinellidae, Styginidae, Xuigiella
Subtaxa: Panderiidae Tsinaniidae
Ecology: nektobenthic carnivore
Distribution:
• Uhaku of Estonia (1 collection), Sweden (1)
• Dobrotivian of Spain (7)
• Langevoja of Sweden (1)
• Hunderum of the Russian Federation (1), Sweden (3)
• Valaste of Sweden (2)
• Billingen of Estonia (2), the Russian Federation (7)
• Arenig of Canada (1: Newfoundland and Labrador)
• Ordovician of Antarctica (1), Australia (1), Belgium (5), China (4), Czechia (2), Estonia (6), Iran (1), Latvia (1), Norway (13), the Russian Federation (16), Sweden (33), the United Kingdom (3), United States (1: Maine)
• Taoyuanian of China (4)
• Cambrian of Australia (3), China (5), Iran (1), South Korea (6)
Total: 132 collections including 138 occurrences