Class Pycnogonida Latreille 1810 (sea spider)

Pycnogonida

Synonym: Arachnopoda Dana 1853

Parent taxon: Arthropoda according to J.A. Dunlop et al. 2020

See also Nielsen 2012, Sepkoski 2002 and Siveter et al. 2004

Sister taxa: Actaeus, Agonata, Almenia, Aptera, Arachnoidea, Blattina splendens, Bradoriida, Branchiata, Bundenbachiellus, Burgessia, Clypecaris, 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, Hexapoda, Huangshandongia, Jianfengia, Jiucunella, Kablikia, Kampecaris obanensis, Kleptothule, Kounicia, Liantuoia, Libellula carbonaria, Longquania, Marrelomorpha, Meristosoma, Merostomoidea, Molaria, Monoculus, Motina, Myriapoda, Naptile, Notchia, Occacaris, Odaraiida, Orstenocarida, Palaeophonus arctus, Panlongia, Paratrilobita, Parioscorpio, Parvancorinomorpha, Parvibellus, Pauloterminus, Pedestria, Pisinnocaris, Platicytes, Plenocaris, Pleurolycosa, Pleurolycosa prolifera, Poliochera pustulatus, Priscansermarinus, Proricaris, Protocaris, Pseudarthron, Pseudoiulia, Pygmaclypeatus, Rhombicalvaria, Rhynimonstrum, Schizodiscus, Scorpionida, Serracaris, Shankouia, Skaracarida, Synistata, Tanglangia, Tuzoida, Unogata, Utahcaris, Walossekia, Zagoracaris, Proschizoramia, Marrellomorpha, Deuteropoda, Siberion, Artiopoda, Hadranax, Dinocarida, Arachnomorpha, Radiodonta, Megadictyon

Subtaxa: Austrodecus Cambropycnogon Flagellopantopus Haliestes Palaeoisopoda Palaeoisopodidae Palaeomarachne Palaeopantopoda Palaeothea Pantopoda Pentapantopus

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Ecology: epifaunal carnivore

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