Trilobita - Phacopida - Cheiruridae
Synonym: Cydonocephalus Whittington 1963
Parent taxon: Cheiruridae according to P. A. Jell and J. M. Adrain 2002
See also Adrain and Fortey 1997, Congreve and Lieberman 2011 and Sepkoski 2002
Sister taxa: Acanthoparyphinae, Actinopeltis, Anasobella, Ancyginaspis, Arcticeraurinella, Areia, Areiaspis, Borealaspis, Bornholmaspis, Ceraurinium, Cerauromeros, Cerauropeltis, Ceraurus, Chacomurus, Cheirurinae, Cheirurus, Chiozoon, Contracheirurus, Crotalocephalides, Crotalocephalina, Crotalocephalus, Cyrtometopinae, Cyrtometopus, Deiphon, Deiphoninae, Didrepanon, Eccoptochilinae, Forteyops, Foulonia, Gabriceraurus, Hammannopyge, Hapsiceraurus, Heliomera, Heliomeroides, Hemisphaerocoryphe, Holia, Holotrachelus, Hyrokybe, Junggarella, Kolymella, Krattaspis, Ktenoura, Laneites, Lehua, Onycopyge, Osekaspis, Parayoungia, Parisoceraurus, Pateraspis, Patomaspis, Pilekiinae, Placoparina, Pompeckia, Proromma, Protocerauroides, Pseudocheirurus, Radiurus, Ratinkaspis, Reraspis, Sphaerexochinae, Sphaexerochinae, Stubblefieldia, Sycophantia, Turantyx, Valongia, Whittakerites, Xylabion, Xystocrania, Youngia, Zazvorkaspis, Kinderlania
Subtaxa: Kawina arnoldi Kawina chazyensis Kawina divergens Kawina griphus Kawina limbata Kawina mercurius Kawina prolificus Kawina prominulus Kawina scrobiculus Kawina sinica Kawina torulus Kawina trentonensis Kawina vulcanus Kawina webbi Kawina wilsoni
Type: Pseudosphaerexochus vulcanus
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Chazyan of Canada (4: Newfoundland and Labrador, Quebec collections), United States (3: New York)
• Whiterockian of Canada (9: Newfoundland and Labrador, Northwest Territories, Quebec), Norway (1), United States (12: Nevada, New York, Oklahoma, Vermont)
• Arenigian of Canada (1: Northwest Territories)
• Ordovician of Canada (3: Newfoundland and Labrador, Northwest Territories), China (2), Ireland (1), Norway (1), the United Kingdom (1), United States (12: California, Nevada, Utah)
Total: 50 collections including 64 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.