Arthrodira

== Translingual == === Etymology === From Ancient Greek ἄρθρον (árthron, “joint”) + δειρή (deirḗ, “throat”). === Proper noun === †Arthrodira A taxonomic order within the class Placodermi – certain extinct armored, jawed fishes. ==== Synonyms ==== (order): Arthrodiriformes ==== Hypernyms ==== (order): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Deuterostomia – infrakingdom; Chordata – phylum; Vertebrata - subphylum; Gnathostomata - infraphylum; †Placodermi - class ==== Hyponyms ==== (order): Phlyctaenioidei – clade Brachythoraci – suborder; Williamsaspididae, Groenlandaspididae, Arctolepididae, Phlyctaeniidae – suborder and families in Phlyctaenioidei Actinolepidae, Phyllolepida, Wuttagoonaspidae – other families === References === Arthrodira on Wikipedia.Wikipedia Arthrodira on Wikispecies.Wikispecies Category:Arthrodira on Wikimedia Commons.Wikimedia Commons “Arthrodira”, in Paleobiology Database, 2026