Trilobita - Phacopida - Cheiruridae
Full reference: B. N. Cooper. 1953. Trilobites from the Lower Champlainian formations of the Appalachian Valley. Geological Society of America Memoir 55:1-69
Parent taxon: Cheiruridae according to P. A. Jell and J. M. Adrain 2003
Sister taxa: Acanthoparyphinae, Actinopeltis, Anasobella, Areia, Areiaspis, Borealaspis, Ceraurinus, Cerauroides, Cerauromeros, Ceraurus, Cheirurinae, Cheirurus, Chiozoon, Contracheirurus, Crotalocephalina, Crotalocephalus, Cydonocephalus, Cyrtometopella, Cyrtometopus, Deiphon, Didrepanon, Eccoptochile, Gabriceraurus, Hadromeros, Heliomera, Heliomeroides, Hemisphaerocoryphe, Holia, Hyrokybe, Junggarella, Kawina, Ktenoura, Lehua, Nieszkowskia, Onycopyge, Osekaspis, Pandaspinapyga, Paraceraurus, Parayoungia, Parisoceraurus, Pateraspis, Placoparina, Proromma, Protocerauroides, Pseudocheirurus, Pseudosphaerexochus, Radiurus, Remipyga, Skelipyx, Sphaerexochus, Sphaerocoryphe, Sphaexerochinae, Stubblefieldia, Sycophantia, Valongia, Whittakerites, Xystocrania, Youngia
Subtaxa: Ceraurinella arctica, Ceraurinella brevispina, Ceraurinella chondra, Ceraurinella kingstoni, Ceraurinella latipyga, Ceraurinella longispina, Ceraurinella media, Ceraurinella nahanniensis, Ceraurinella necra, Ceraurinella polydorus, Ceraurinella pompilia, Ceraurinella seriata, Ceraurinella typa, Ceraurinella zhoui
Type: Ceraurinella typa
Ecology: fast-moving low-level epifaunal carnivore