Trilobita - Asaphida - Asaphidae
Parent taxon: Asaphidae according to Z. Q. Zhou and Z. Y. Zhou 2019
See also Fortey 1975, Hoel 1999 and Neuman and Bruton 1974
Sister taxa: Anataphrus, Asaphellus, Asaphinae, Atopasaphus, Aulacoparia, Australopyge, Basilicus, Bellefontia, Birmanites, Bohemopyge, Borogothus, Brachyaspis, Branisaspis, Burminresia, Ectenaspis, Emanuelaspis, Eoasaphus, Eoisotelus, Fuyunia, Gerasaphes, Gogiura, Griphasaphus, Guohongjunia, Homalopyge, Hunnebergia, Isabelinia, Isotelinae, Isyrakopeltis, Kainisiliellina, Kayseraspis, Klabavia, Kobayashia, Lachnostoma, Lisogorites, Lycophron, Metaptychopyge, Metayuepingia, Nahannia, Neopeltis, Nerudaspis, Nileoides, Ningkianites, Niobides, Niobina, Nobiliasaphinae, Nobiliasaphus, Norasaphus, Norinia, Ogmasaphus, Ogygiinae, Ogyginus, Ogygiocaridinae, Ogygiocarinae, Ogygiocaris, Ogygites, Ogygitoides, Onchometopus, Parabellefontia, Paramegalaspis, Paratamdaspis, Penchiopsis, Plectasaphus, Popovkiaspis, Presbynileus, Priceaspis, Proasaphus, Promegalaspidinae, Proscharyia, Protopresbynileus, Protoptychopyge, Pseudasaphus, Pseudoasaphus, Pseudogriphasaphus, Pseudogygites, Pseudoptyocephalus, Psilocephalina, Ptychopyge, Ptychopyginae, Ptyocephalus, Sanbernardaspis, Stegnopsis, Stenorhachis, Suriaspis, Tchukeraspis, Thysanopyge, Trigonocerca, Trigonocercella, Valdaites, Vogdesia, Xenasaphus, Xenostegium, Zhenganites, Zuninaspis
Type: Niobe
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Chazyan of Canada (3: Newfoundland and Labrador collections)
• Whiterockian of Canada (11: Newfoundland and Labrador), United States (2: Nevada, Utah)
• Fennian of France (1)
• Volkhov of the Russian Federation (12), Sweden (11)
• Langevoja of Sweden (2)
• Hunderum of Sweden (2)
• Arenig of China (1), France (2), Greenland (1), Norway (1), Sweden (6)
• Arenigian of China (3)
• Ordovician of Argentina (1), Canada (1: Yukon), China (6), Estonia (2), France (2), Iran (1), Ireland (2), Norway (26), the Russian Federation (4), Sweden (22), the United Kingdom (1), United States (14: Alaska, Idaho, Nevada, New York, Utah, Virginia)
• Tremadoc of Argentina (1), Canada (1: Alberta), China (11), Colombia (1), the Czech Republic (1), France (2), Norway (1), Sweden (3)
• Cressagian of the United Kingdom (2)
• Ibexian of Norway (1)
• Cambrian to Ordovician of the Russian Federation (2)
• Cambrian of Australia (2), China (10), Kazakhstan (5), Norway (2), the Russian Federation (6), Sweden (1), Turkey (1)
• Taoyuanian of China (1)
Total: 194 collections including 235 occurrences