Artiopoda - Asaphida - Asaphidae
Parent taxon: Asaphidae according to R. A. Fortey and R. M. Owens 1978
See also Henningsmoen 1960
Sister taxa: Anataphrus, Asaphellus, Asaphinae, Atopasaphus, Aulacoparia, Australopyge, Basilicus, Bellefontia, Birmanites, Bohemopyge, Borogothus, Brachyaspis, Branisaspis, Burminresia, Delphasaphus, Ectenaspis, Ekeraspis, Emanuelaspis, Eoasaphus, Eoisotelus, Fuyunia, Gerasaphes, Gogiura, Griphasaphus, Guohongjunia, Homalopyge, Hunnebergia, Isabelinia, Isotelinae, Isyrakopeltis, Kainisiliellina, Kayseraspis, Klabavia, Kobayashia, Lachnostoma, Lisogorites, Lycophron, Metaptychopyge, Metayuepingia, Nahannia, Neoasaphus, Neopeltis, Nerudaspis, Nileoides, Ningkianites, Niobides, Niobina, Niobinae, Nobiliasaphinae, Nobiliasaphus, Norasaphus, Norinia, Ogmasaphus, Ogygiinae, Ogyginus, 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, Subasaphus, Suriaspis, Tchukeraspis, Thysanopyge, Trigonocerca, Trigonocercella, Valdaites, Vogdesia, Xenasaphus, Xenostegium, Zhenganites, Zuninaspis
Subtaxa: Merlinia
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Whitlandian of the United Kingdom (3 collections)
• Arenig of Argentina (8), the United Kingdom (4)
• Ordovician of Argentina (8), Australia (1), the United Kingdom (7)
Total: 31 collections including 33 occurrences