Trilobita - Corynexochida - Dorypygidae
Parent taxon: Dorypygidae according to E. Landing et al. 2008
Sister taxa: Atdabanella, Basocephalus, Bonnaria, Bonnia, Bonniella, Bonnima, Bonniopsis, Dorypygina, Fordaspis, Hicksia, Holteria, Holyoakia, Kooteniella, Kooteniellina, Liokootenia, Mengzia, Metakootenia, Ogygopsis, Olenoides, Olenoidestranans, Paraolenoides, Popigaia, Prokootenia, Protypus, Shipaiella, Strettonia, Tabatopygellina, Tolanaspis
Ecology: nektobenthic carnivore
Distribution:
• Marjumian of United States (4: Arizona collections)
• Cambrian of Antarctica (4), Argentina (3), Australia (4), Canada (30: Alberta-British Columbia, British Columbia, Newfoundland and Labrador, Northwest Territories), China (78), Greenland (7), Iran (2), Italy (1), Kazakhstan (8), Kyrgyzstan (3), Mexico (2), North Korea (1), the Russian Federation (19), South Korea (1), Turkey (5), the United Kingdom (2), United States (66: Alaska, Arizona, California, Idaho, Montana, Nevada, Nevada and California, Pennsylvania, Utah, Vermont, Virginia)
Total: 240 collections including 280 occurrences