Parent taxon: Euarthropoda according to R. O'Flynn et al. 2024
See also Lerosey-Aubril et al. 2020, Lerosey-Aubril et al. 2017, Mayers et al. 2019, Ortega-Hernandez et al. 2013, Ortega-Hernandez et al. 2014 and Zeng et al. 2020
Sister taxa: Actaeus, Agonata, Almenia, Aptera, Arachnoidea, Blattina splendens, Bradoriida, Branchiata, Bundenbachiellus, Burgessia, Clypecaris, Crustacea, Cryptocaris, 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, Deuteropoda, Hadranax, Youti, Dinocarida, Radiodonta, Megadictyon, Marrellomorpha, Siberion, Parioscorpio, Arachnomorpha, Proschizoramia
Subtaxa: Agnostida Conciliterga Falcatamacaris Kwanyinaspis Molaria Phytophilaspis Retifacies Squamacula Trilobita Trilobitomorpha Vicissicaudata Zonoscutum Zonozoe
Ecology: