†family Xystriduridae Whitehouse (trilobite)
Trilobita - Redlichiida - Xystriduridae
Alternative spelling: Xystridurinae
Parent taxon: Paradoxidoidea according to J. M. Adrain 2011
See also Kruse 1990, Palmer and Gatehouse 1972 and Whittington et al. 1997
Sister taxa: Centropleuridae, Paradoxididae
Subtaxa: Galahetes Xystridura
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Solvan of Australia (3 collections)
• Ordian of Australia (1)
• Cambrian of Antarctica (1), Australia (2), China (1)
Total: 8 collections including 10 occurrences