Ammonoidea

== Translingual == === Etymology === Ammonites +‎ -oidea === Proper noun === †Ammonoidea A taxonomic subclass within the class Cephalopoda – the ammonites, extinct from 66Ma. ==== Hypernyms ==== (subclass): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Protostomia – infrakingdom; Spiralia – superphylum; Mollusca – phylum; Cephalopoda – class ==== Hyponyms ==== (subclass): †Ammonitida, †Ceratitida, †Clymeniida, †Goniatitida, †Prolecanitida - orders === Further reading === Ammonoidea on Wikipedia.Wikipedia Ammonoidea on Wikispecies.Wikispecies Category:Ammonoidea on Wikimedia Commons.Wikimedia Commons “Ammonoidea”, in Paleobiology Database, 2026