Parent taxon: Euarthropoda according to M. R. Smith and J. Ortega-Hernández 2014
See also Briggs et al. 2008, Pates et al. 2021 and Sepkoski 2002
Sister taxa: Actaeus, Agonata, Almenia, Aptera, Arachnoidea, Armadillidium molassicum, Armadillidium payangadensis, Blattina splendens, Bradoriida, Branchiata, Bundenbachiellus, Burgessia, Clypecaris, Crustacea, Dalmaniopsis, Devonopilio, Devonopilio hutchinsoni, Dicerocaris, Dinopilio parvus, Dongshanocaris, Douglasocaris, Emeiella, Ercaia, Esmeraldacaris, Euthycarcinoidea, Forfexicaris, Gaoqiaioella, Geracus, Geracus tubifer, Gigantopleurida, Goticaris, Graeophonus, Guangweicarididae, Habelia, Hanburia, Henningsmoenicaris, Huangshandongia, Jianfengia, Jiucunella, Kablikia, Kampecaris obanensis, Keurbos, Kleptothule, Kounicia, Liantuoia, Libellula carbonaria, Longquania, Marrelomorpha, Meristosoma, Merostomoidea, Monoculus, Motina, Myriapoda, Naptile, Notchia, Occacaris, Odaraiida, Orstenocarida, Palaeophonus arctus, Panlongia, Paratrilobita, Parvancorinomorpha, Parvibellus, Pauloterminus, Pedestria, Pisinnocaris, Platicytes, Plenocaris, Pleurolycosa, Pleurolycosa prolifera, Poliochera pustulatus, Priscansermarinus, Proricaris, Protocaris, Pseudoiulia, Pycnogonida, Pygmaclypeatus, Rhynimonstrum, Schizodiscus, Scorpionida, Serracaris, Shankouia, Skaracarida, Sunellidae, Synistata, Tanglangia, Tuzoida, Unogata, Utahcaris, Zagoracaris, Proschizoramia, Arachnomorpha, Dinocarida, Siberion, Deuteropoda, Hadranax, Megadictyon, Artiopoda, Youti, Marrellomorpha, Parioscorpio
Subtaxa: Amplectobeluidae Anomalocarididae Caryosyntrips Cerabonusoides Cetiocaridae Hurdiidae Kerygmachela Laggania Myoscolex Tamisiocarididae
Ecology: fast-moving nektonic carnivore
Distribution:
• Devonian of Germany (1 collection)
• Ordovician of Morocco (1)
• Cambrian of Australia (2), Canada (36: Brithish Columbia, British Columbia), China (45), Greenland (4), Poland (1), United States (32: California, Nevada, Pennsylvania, Utah, Vermont)
• Solvan of Canada (2: British Columbia), Czechia (1), United States (1: Nevada)
• Waucoban of Canada (1: Northwest Territories)
Total: 127 collections including 205 occurrences