Artiopoda - Ptychopariida - Onchonotopsidae
Parent taxon: Ptychopariida according to C. J. Bentley et al. 2006
See also Adrain 2011
Sister taxa: Acrocephalitidae, Alokistocaridae, Amphorella, Atratebiinae, Bifodina, Bolaspididae, Bulnibarbi, Bvalbardites, Catillicephalidae, Chondrastaulina, Chuangiformis, Cliffiidae, Conococheaquea, Conocoryphidae, Conokephalinidae, Crepicephalidae, Diceratocephalidae, Elviniidae, Harpina, Indiligens, Jamrogiidae, Kazelina, Kingstoniidae, Kirengelia, Lisaniidae, Lonchocephalidae, Lorenzellidae, Marjumiidae, Meniscocorphye, Meniscocoryphe, Menomoniidae, Neoanomocerella, Nepeidae, Norwoodiidae, Olenina, Papyriaspididae, Phylacteridae, Plethopeltidae, Proasaphiscidae, Propeltura, Ptychopariidae, Ptychopariina, Ptychoparoides, Raymondinidae, Shumardiidae, Solenopleuracea, Solenopleuridae, Tricrepicephalidae, Xianquianaspis, Yuehsieszella
Subtaxa: Cryptoderaspis Durinia Matania Onchonotopsis
Type: Onchonotopsis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Cambrian of Antarctica (1 collection), Canada (1: Yukon), Greenland (10), Kazakhstan (1), United States (4: Alaska, Vermont)
Total: 17 collections including 28 occurrences