PaleoDB taxon number: 85334
Parent taxon: Phacopida according to H. B. Whittington et al. 1997
Sister taxa: Acastellina, Acastidae, Acastopyge, Adastocephalum, Aegrotocatellus, Alcaldops, Altaesajania, Alwynulus, Anapliomerella, Arduennella, Argentopyge, Australops, Bathycheilidae, Batyraspis, Bavarillidae, Bevanopsis, Blanodalmanites, Boeckops, Bolivianaspis, Bornholmaspis, Bufoceraurus, Burmeisterella, Burtonops, Calmoniidae, Calpmenella, Calymenidae, Calymenina, Celtencrinurus, Ceraurinium, Cerauropeltis, Chacomurus, Cheirurina, Chiarumanipyge, Cordapeltis, Corycephalus, Courtessolium, Crotalocephalides, Cryphina, Dalmanitidae, Dalmaniturus, Dayongia, Delocare, Demeterops, Devonodontochile, Diaphanometopus, Drotops, Eccoptochiloides, Echinophacops, Echinopyge, Emsurina, Encrinuridae, Eocheiurus, Eodindymene, Fenestraspis, Feruminops, Forillonaria, Foulonia, Frenerinuroides, Furacopyge, Gourdonia, Gyrometopus, Hadrohybus, Hammannopyge, Hapsiceraurus, Heliocephalus, Hexacosta, Homalonotidae, Ibexaspis, Illaenula, Josephulus, Kolymella, Krattaspis, Laneites, Langgoni, Leiostrototropis, Leviceraurus, Libertella, Liolophops, Llandovacaste, Malladaia, Metapliomerops, Mezocrotalus, Mitchellaspis, Morocconites, Nipponocalymene, Pamirotellus, Parachuangia, Paratzuchiatocnemis, Pelitlina, Perirehaedulus, Phacopidae, Phacopina, Phalangocephalus, Pharostomatidae, Pilekiidae, Pliomeridae, Podolites, Probolops, Prodontochile, Prosopiscidae, Pterygometopidae, Ptychometopus, Punillaspis, Rabienops, Radiopyge, Renniella, Reraspis, Reussiana, Rhinophacops, Rhinoreedops, Roncellia, Sambremeusapis, Sanidopyge, Scabrella, Schoharia, Seisonia, Spathacalymene, Spinodontochile, Teichertops, Thulincola, Toxophacops, Trypaulites, Turcopyge, Typhloiscus, Victorispina, Vietnamia, Wallacia, Xuanenia, Xylabion, Yankaoia
Subtaxa: Acanthoparyphinae, Anasobella, Areia, Areiaspis, Borealaspis, Ceraurinus, Cerauroides, Cerauromeros, Ceraurus, Cheirurinae, Cheirurus, Chiozoon, Contracheirurus, Crotalocephalina, Crotalocephalus, Cyrtometopella, Cyrtometopinae, Deiphon, Deiphoninae, Didrepanon, Eccoptochilinae, Forteyops, Gabriceraurus, Heliomera, Heliomeroides, Holia, Hyrokybe, Junggarella, Kawina, Ktenoura, Lehua, Nieszkowskia, Onycopyge, Osekaspis, Paraceraurus, Parayoungia, Parisoceraurus, Pateraspis, Placoparina, Pompeckia, Proromma, Protocerauroides, Pseudocheirurus, Radiurus, Remipyga, Sphaerexochinae, Sphaexerochinae, Stubblefieldia, Sycophantia, Valongia, Whittakerites, Xystocrania, Youngia
Ecology: fast-moving low-level epifaunal carnivore