Artiopoda - Ptychopariida - Shumardiidae
Parent taxon: Ptychopariida according to H. B. Whittington et al. 1997
See also Adrain 2011, Harrington and Leanza 1957 and Robison and Pantoja-Alor 1968
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, Onchonotopsidae, Papyriaspididae, Phylacteridae, Plethopeltidae, Proasaphiscidae, Propeltura, Ptychopariidae, Ptychopariina, Ptychoparoides, Raymondinidae, Solenopleuracea, Solenopleuridae, Tricrepicephalidae, Xianquianaspis, Yuehsieszella
Subtaxa: Acanthopleurella Changchowilla Conophrys Koldinioidia Kweichowilla Leioshumardia Leoforteyia Liriamnica Shumardia Shumardoella Shumardops Tarimella
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Dobrotivian of Czechia (1 collection)
• Whiterockian of Canada (5: Newfoundland and Labrador), Norway (2), United States (1: Nevada)
• Chazyan of Canada (2: Newfoundland and Labrador)
• Billingen of Norway (1)
• Arenigian of Canada (1: Northwest Territories), China (6)
• Arenig of Argentina (1), Australia (1), Bolivia (1), Canada (2: Newfoundland and Labrador), China (3), Norway (3), the Russian Federation (1), Sweden (3), the United Kingdom (2)
• Ordovician of Argentina (33), Australia (6), Bolivia (5), Canada (2: Alberta, Northwest Territories), China (52), France (2), Iran (7), Ireland (1), Italy (5), Kazakhstan (3), Mexico (8), Norway (12), the Russian Federation (1), Spain (2), Sweden (4), the United Kingdom (13), United States (12: California, Nevada, New York, Utah)
• Ibexian of United States (1: Nevada)
• Skullrockian of Argentina (1)
• Taoyuanian of China (2)
• Cambrian to Ordovician of Argentina (1), Canada (1: Quebec)
• Cambrian of Argentina (7), Australia (15), China (14), Kazakhstan (4), South Korea (1), the United Kingdom (6), Vietnam (1)
Total: 258 collections including 273 occurrences