Echiura

== Translingual == === Etymology === From Ancient Greek ἔχις (ékhis, “viper”) + οὐρά (ourá, “tail”). === Proper noun === Echiura A taxonomic subclass within the class Polychaeta – the spoon worms. ==== Hypernyms ==== (subclass): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Protostomia – infrakingdom; Spiralia – superphylum; Annelida – phylum; Polychaeta – class ==== Hyponyms ==== (subclass): Echiuroinea, Heteromyota, Xenopneusta - orders === References === Echiura on Wikipedia.Wikipedia Echiura on Wikispecies.Wikispecies Category:Echiura on Wikimedia Commons.Wikimedia Commons Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living Organisms. PLoS ONE 10(4): e0119248. PMID 25923521, →DOI