Artiopoda

Artiopoda Temporal range: Early Cambrian - Late Permian PreꞒ Ꞓ O S D C P T J K Pg N
Misszhouia, a nektaspid
Cheloniellon, a cheloniellid
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
(unranked):	†Artiopoda Hou and Bergstrom, 1997
Subgroupings
†Squamacula †Thulaspis †Urokodia [1] Protosutura †Acanthomeridion †Zhiwenia †Australimicola †Campanamuta †Falcatamacaris †Molaria †Retifacies †Pygmaclypeatus †Bailongia †Strabopida? Trilobitomorpha †Retifacies? †Pygmaclypeatus? †Campanamuta? †Kwanyinaspis †Arthroaspis †Tonglaiia[2] †Nektaspida †Trilobita †Agnostida?(Traditionally included within Trilobita) †Conciliterga †Haifengella †Helmetia †Kuamaia †Kwanyinaspis †Rhombicalvaria †Saperion †Skioldia †Tegopelte †Xandarellida (=Petalopleura) †Luohuilinella †Cindarella †Phytophilaspis †Xandarella †Sinoburius †Zhugeia[2] Vicissicaudata †Xenopoda (possibly paraphyletic) †Sidneyia †Emeraldella †Etainia †Kodymirus †Eozetetes †Carimersa †Cheloniellida †Aglaspidida

The Artiopoda is a grouping of extinct arthropods that includes trilobites and their close relatives. It was erected by Hou and Bergström in 1997^[3] to encompass a wide diversity of arthropods that would traditionally have been assigned to the Trilobitomorpha. Trilobites, in part due to abundance of findings owing to their mineralized exoskeletons, are by far the best recorded, diverse, and long lived members of the clade. Other members, which lack mineralised exoskeletons, are known mostly from Cambrian deposits.^[4]