Trilobita - Olenida - Dokimokephalidae
Alternative spelling: Dokimocephalidae
Parent taxon: Olenida according to J. M. Adrain 2011
See also Jell and Adrain 2002
Sister taxa: Andrarinidae, Aphelaspidae, Asaphiscidae, Cedariidae, Eulomidae, Idahoiidae, Loganellidae, Olenidae, Parabolinoididae, Pterocephaliidae
Subtaxa: Alekcinella Anemocephalus Anuloides Apachia Bellaspidella Bellaspis Beothuckia Burnetiella Calocephalites Chalfontia Conaspis Deckera Dellea Delleana Didwudina Dokimocephalus Glyptometopsis Glyptometopus Iddingsia Jingxiania Kindbladia Kiowaia Kyphocephalus Lorrettina Obrucheviaspis Pinctus Pseudosaratogia Ritella Saimachia Stittella Sulcocephalus Taenicephalina Tatulaspis Tchuostachia Whittingtonella Wilsonarella Wuhuia
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Ordovician of Canada (2: Newfoundland and Labrador collections)
• Cambrian of Argentina (1), Australia (20), Canada (19: Alberta, British Columbia, Newfoundland, Newfoundland and Labrador, Quebec, Yukon), China (3), Kazakhstan (4), the Russian Federation (2), United States (183: Alaska, Arkansas, California, Idaho, Indiana, Missouri, Montana, Nevada, Oklahoma, Pennsylvania, South Dakota, Texas, Utah, Vermont, Virginia, Wisconsin, Wyoming)
• Taoyuanian of China (7), South Korea (2)
Total: 243 collections including 450 occurrences