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:
• Marjumian of United States (2: South Carolina collections)
• Cambrian of Antarctica (2), Australia (7), Canada (11: New Brunswick, Newfoundland and Labrador), China (1), the Czech Republic (21), Denmark (2), France (6), Germany (4), Greenland (5), Italy (3), Morocco (16), Norway (5), Poland (4), the Russian Federation (7), Spain (11), Sweden (4), Turkey (20), the United Kingdom (5), United States (4: Alaska, Massachusetts, Nevada, Vermont)
Total: 140 collections including 203 occurrences