†family Ordosiidae Lu 1954 (trilobite)
Artiopoda - Asaphida - Ordosiidae
Parent taxon: Asaphida according to J. Yuan et al. 2012
See also Dean 1982
Sister taxa: Aethodionide, Anomocarellidae, Anomocaridae, Anomocaroidea, Asaphina, Asaphoidea, Cyclopygoidea, Dikelocephaloidea, Eurekiidae, Hungaiidae, Parabumasttides, Pseudocyclopyge, Pterocephalidae, Remopleuridae, Rhyssometopidae, Trinucleoidea
Subtaxa: Delinghaspis Kontrastina Ordosia Paralevisia Poshania Taitzuia Taitzuina
Type: Ordosia
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Cambrian of China (6 collections), the Russian Federation (2)
Total: 8 collections including 13 occurrences