Trilobita - Phacopida - Cheiruridae
Full reference: W. R. Evitt. 1951. Some Middle Ordovician trilobites of the families Cheiruridae, Harpidae, and Lichidae. Journal of Paleontology 25(5):587-616
Parent taxon: Cheiruridae according to P. A. Jell and J. M. Adrain 2002
See also Edgecombe et al. 1999 and Sepkoski 2002
Sister taxa: Acanthoparyphinae, Actinopeltis, Anasobella, Ancyginaspis, Arcticeraurinella, Areia, Areiaspis, Borealaspis, Bornholmaspis, Ceraurinium, Cerauromeros, Cerauropeltis, Ceraurus, Chacomurus, Cheirurinae, Cheirurus, Chiozoon, Contracheirurus, Crotalocephalides, Cyrtometopinae, Cyrtometopus, Deiphon, Deiphoninae, Didrepanon, Eccoptochilinae, Forteyops, Foulonia, Gabriceraurus, Hammannopyge, Hapsiceraurus, Heliomera, 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, Xystocrania, Youngia, Zazvorkaspis, Kinderlania
Subtaxa: Heliomeroides alacer Heliomeroides evitti Heliomeroides freschaufae Heliomeroides raymondi Heliomeroides teres Heliomeroides treta
Type: Heliomeroides teres
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Whiterockian of Canada (2: Newfoundland and Labrador collections), United States (2: New York, Vermont)
• Chazyan of Canada (10: Newfoundland and Labrador, Northwest Territories), United States (2: New York)
• Arenigian of Canada (1: Northwest Territories)
• Ordovician of Argentina (3), Spain (1), the United Kingdom (2), United States (3: California, Illinois, Virginia)
Total: 26 collections including 27 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.