Alternative spellings: Antiarcha, Antiarcha
Parent taxon: Placodermi according to R. van der Laan 2019
See also Denison 1975, Denison 1978, Gadow 1898, Hay 1902, Sepkoski 2002 and Young 2010
Sister taxa: Acanthothoraci, Acanthothoraciformes, Arthrodira, Asiacanthus, Austroptyctodus, Bianchengichthys, Brindabellaspida, Campbellodus, Changyonophyton, Coccostei, Coelosteichthys, Cratoselachiidae, Deinodus, Entelognathus, Hybosteus, Neopetalichthys, Nessariostoma, Oestophorus, Petalichthida, Petalichthyida, Petalichthyida, Pseudopetalichthyida, Pseudopetalichthyiformes, Ptychostei, Ptyctodontida, Rhenanida, Rhenaniformes, Sedowichthys, Stensioelliformes, Tollichthys, Wangolepis, Yunnanacanthus
Subtaxa: Grossaspis Jiangxilepis Liujiangolepidae Macrodontophion Phymolepis Pterichthyodid Silurolepidae Xichonolepis Yunnanolepidiformes Zhanjilepis
Ecology: nektonic carnivore