Trilobita - Phacopida - Cheiruridae
Synonym: Xialiangshania Chen in Li et al 1975
Full reference: H. B. Whittington. 1965. Trilobites of the Ordovician Table Head Formation, western Newfoundland. Bulletin of the Museum of Comparative Zoology 132(4):275-441
Parent taxon: Cheiruridae according to P. A. Jell and J. M. Adrain 2002
See also Sepkoski 2002 and Zhou et al. 2014
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, Kawina, 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, Youngia, Zazvorkaspis, Kinderlania
Subtaxa: Xystocrania glaucus Xystocrania perforator Xystocrania pyriformis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Whiterockian of Canada (7: Newfoundland and Labrador, Northwest Territories collections), United States (2: Nevada)
• Ordovician of China (2), United States (3: Nevada, Utah)
Total: 14 collections including 15 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.