Parent taxon: Arthropoda according to J. Ortega-Hernandez et al. 2014
Sister taxa: Actaeus, Agonata, Almenia, Aptera, Arachnoidea, Aristocaris, Blattina splendens, Bostrichopus, Bradoriida, Branchiata, Bundenbachiellus, Burgessia, Cambropachycope, Chelicerata, Cindarella, Clypecaris, Conchostraca, Corcorania, Dalmaniopsis, Dicerocaris, Dongshanocaris, Douglasocaris, Duslia, Emeiella, Ercaia, Euthycarcinoidea, Forfexicaris, Fuxianhuiida, Gaoqiaioella, Geracus, Geracus tubifer, Gigantopleurida, Goticaris, Graeophonus, Guangweicarididae, Habelia, Hanburia, Henningsmoenicaris, Huangshandongia, Isoxys, Jianfengia, Jiucunella, Kablikia, Kampecaris obanensis, Kleptothule, Kounicia, Liantuoia, Libellula carbonaria, Longquania, Mandibulata, Marrella, Marrelomorpha, Martinssonia, Meristosomo, Merostomoidea, Molaria, Mollisonia, Monoculus, Motina, Myriapoda, Naptile, Nektaspida, Occacaris, Odaraia, Orstenocarida, Oxyuropoda, Pahvantia, Panlongia, Parapaleomerus, Paratrilobita, Parvancorinomorpha, Pauloterminus, Pectocaris, Pedestria, Pisinnocaris, Platicytes, Plenocaris, Poliochera pustulatus, Priscansermarinus, Protocarcinus, Protocaris, Pseudarthron, Pseudoarctolepis, Pseudoiulia, Pygmaclypeatus, Quasicaris, Rehbachiella, Retifacies, Rhombicalvaria, Rhynimonstrum, Schizodiscus, Scorpionida, Serracaris, Shafferia, Shankouia, Sinoburius, Skaracarida, Synistata, Tanglangia, Unogata, Urokodia, Utahcaris, Walossekia, Xandarella, Xandarellida, Proschizoramia, Dinocarida, Radiodonta, Jianshanopodia, Arachnomorpha, Schinderhannes, Siberion, Hadranax, Megadictyon
Subtaxa: Conciliterga Falcatamacaris Squamacula
Ecology: