Artiopoda - Ptychopariida - Menomoniidae
Parent taxon: Ptychopariida according to H. B. Whittington et al. 1997
See also Adrain 2011 and Stitt 1998
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, Neoanomocerella, Nepeidae, Norwoodiidae, Olenina, Onchonotopsidae, Papyriaspididae, Phylacteridae, Plethopeltidae, Proasaphiscidae, Propeltura, Ptychopariidae, Ptychopariina, Ptychoparoides, Raymondinidae, Shumardiidae, Solenopleuracea, Solenopleuridae, Tricrepicephalidae, Xianquianaspis, Yuehsieszella
Subtaxa: Alataspis Ampullatocephalina Balderia Biaverta Bolaspidella Bridgeia Coenaspis Dresbachia Knechtelia Menomonia Nephalicephalus Paramenomonia Tavsenia Verditerrina
Ecology: fast-moving low-level epifaunal suspension feeder
Distribution:
• Cambrian of Australia (1 collection), Canada (16: Alberta, Newfoundland, Newfoundland and Labrador, Nunavut, Quebec, Yukon), China (2), Greenland (9), India (1), South Korea (1), United States (72: Alaska, Idaho/ Utah, New York, Pennsylvania, South Dakota, Tennessee, Texas, Utah, Vermont, Wisconsin, Wyoming)
Total: 102 collections including 125 occurrences