Trilobita - Ptychopariida - Elviniidae
Parent taxon: Ptychopariida according to H. B. Whittington et al. 1997
See also Adrain 2011 and Jell and Adrain 2002
Sister taxa: Acrocephalitidae, Alokistocaridae, Amphorella, Atratebiinae, Bifodina, Bolaspididae, Bulnibarbi, Bvalbardites, Catillicephalidae, Chondrastaulina, Chuangiformis, Cliffiidae, Conococheaquea, Conocoryphidae, Conokephalinidae, Crepicephalidae, Diceratocephalidae, Harpina, Indiligens, Kazelina, Kingstoniidae, Kirengelia, Lisaniidae, Lonchocephalidae, Lorenzellidae, Marjumiidae, Meniscocorphye, Meniscocoryphe, Menomoniidae, Neoanomocerella, Norwoodiidae, Olenina, Papyriaspididae, Phylacteridae, Plethopeltidae, Proasaphiscidae, Propeltura, Ptychopariidae, Ptychopariina, Ptychoparoides, Raymondinidae, Shumardiidae, Solenopleuracea, Solenopleuridae, Tricrepicephalidae, Xianquianaspis, Yuehsieszella
Subtaxa: Chariocephalus Dartonaspis Drumaspis Dunderbergia Dytremacephalus Elburgia Elvinaspis Elvinia Elviniella Elvinoides Elviraspis Elyaspis Irvingella Jessievillia Kujandina Megadunderbergia Metisaspina Onchopeltis Paraenshia Pesaia Prismenaspis Pseudosaukia Qingshuihella
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Cambrian of Canada (24: Alberta, British Columbia, Newfoundland, Newfoundland and Labrador, Quebec, Yukon collections), Kazakhstan (21), the Russian Federation (2), South Korea (1), United States (234: Alaska, Arkansas, California, Indiana, Minnesota, Missouri, Montana, Nevada, Nevada and Utah, Oklahoma, Pennsylvania, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Wisconsin, Wyoming)
• Taoyuanian of China (8), the Russian Federation (10), South Korea (20)
Total: 320 collections including 427 occurrences