†superfamily Illaenoidea Hawle and Corda 1847 (trilobite)
Parent taxon: Corynexochida according to I. Rabano et al. 2014
Sister taxa: Brylyella, Cheilocephalidae, Chondagraulos, Corynexochidacea, Corynexochina, Corynexochoidea, Dolichometopidae, Granularapis, Granularaspidae, Hemibarrandiidae, Hunnanocephalus, Illaenidae, Illaenina, Leiostegiina, Phillipsinellidae, Styginidae, Xuigiella
Subtaxa: none
Ecology: nektobenthic carnivore
Distribution: found only at Basal Shales, La Venta Fm., Aragoncillo (Ordovician of Spain)