Parent taxon: Redlichiina according to J. M. Adrain 2011
See also Landing et al. 2008
Sister taxa: Akbashichia, Ellipsocephaloidea, Emuelloidea, Fandianaspis, Gonioteloides, Iolgia, Redlichioidea
Subtaxa: Centropleuridae Paradoxididae Xystriduridae
Type: Xystridurinae
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Solvan of Australia (3 collections), the Czech Republic (7), the Russian Federation (2), Spain (2), Sweden (1), United States (1: Nevada)
• Amgan of the Czech Republic (3), Norway (1), Poland (1), the Russian Federation (5), Sweden (2)
• Ordian of Australia (1)
• Delamaran of Canada (1: New Brunswick), Morocco (15)
• Cambrian of Antarctica (2), Australia (3), Canada (10: New Brunswick, Newfoundland and Labrador), China (1), the Czech Republic (11), Denmark (2), France (6), Germany (4), Greenland (5), Italy (3), Morocco (1), Norway (4), Poland (3), the Russian Federation (6), Spain (9), Sweden (1), Turkey (20), the United Kingdom (5), United States (5: Alaska, Massachusetts, South Carolina, Vermont)
Total: 146 collections including 213 occurrences