Parent taxon: Ptychopariida according to R. A. Fortey 1990
See also Briggs et al. 2008, Harrington and Leanza 1957, Pour and Popov 2009, Stitt 1998, Sundberg 1994, Sundberg and McCollum 2000 and Sundberg and McCollum 2003
Sister taxa: Acrocephalitidae, Alokistocaridae, Amphorella, Atratebiinae, Bifodina, Bolaspididae, Bulnibarbi, Bvalbardites, Catillicephalidae, Chondrastaulina, Chuangiformis, Cliffiidae, Conococheaquea, Conocoryphidae, Conokephalinidae, Crepicephalidae, Diceratocephalidae, Elviniidae, Harpina, Indiligens, Kazelina, Kingstoniidae, Kirengelia, Lisaniidae, Lonchocephalidae, Lorenzellidae, Marjumiidae, Meniscocorphye, Meniscocoryphe, Menomoniidae, Neoanomocerella, Norwoodiidae, Olenina, Papyriaspididae, Phylacteridae, Plethopeltidae, Proasaphiscidae, Propeltura, Ptychopariidae, Ptychoparoides, Raymondinidae, Shumardiidae, Solenopleuracea, Solenopleuridae, Tricrepicephalidae, Xianquianaspis, Yuehsieszella
Subtaxa: Conocoryphacea Guizhoucephalina Huaiaspis Leiostegiacea Liostracinoidea Luaspididae Paraantagmus Ptychopariacea Ptychoparioidea Yuknessaspis
Ecology: fast-moving low-level epifaunal deposit feeder