†suborder Asaphina Salter 1864 (trilobite)
Parent taxon: Asaphida according to H. J. Harrington et al. 1959
See also Harrington and Leanza 1957
Sister taxa: Aethodionide, Anomocarellidae, Anomocaridae, Anomocaroidea, Asaphoidea, Cyclopygoidea, Dikelocephaloidea, Eurekiidae, Hungaiidae, Ordosiidae, Parabumasttides, Pseudocyclopyge, Remopleuridae, Rhyssometopidae, Trinucleoidea
Subtaxa: Asaphacea Illaenacea
Ecology: fast-moving low-level epifaunal carnivore