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:
• Dobrotivian of Spain (6 collections)
• Uhaku of Estonia (1), Sweden (1)
• Volkhov of the Russian Federation (12)
• Valaste of Sweden (2)
• Langevoja of Sweden (1)
• Hunderum of the Russian Federation (1), Sweden (3)
• Arenig of Canada (1: Newfoundland and Labrador)
• Ordovician of Australia (1), Belgium (5), China (4), the Czech Republic (1), Estonia (8), Iran (1), Latvia (1), Norway (13), the Russian Federation (10), Sweden (33), the United Kingdom (3), United States (1: Maine)
• Tremadoc of Antarctica (1), the Czech Republic (1)
• Taoyuanian of China (4)
• Cambrian of Australia (3), China (5), Iran (1), South Korea (6)
Total: 130 collections including 136 occurrences