Irregularia

Translingual

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Proper noun

Irregularia

A taxonomic infraclass within the class Echinoidea – certain sea urchins.

Hypernyms

(infraclass): Eukaryota - superkingdom; Animalia - kingdom; Bilateria - subkingdom; Deuterostomia - infrakingdom; Deuterostomia - superphylum; Echinodermata - phylum; Echinozoa - subphylum; Echinoidea - class; Euechinoidea - subclass

Hyponyms

(infraclass): Cassiduloida, Clypeasteroida (sand dollars), Echinolampadoida, Holasteroida, Spatangoida (heart urchins) - orders

Coordinate terms

(infraclass in Euechinoida): Carinacea, Acroechinoidea - infraclasses; Echinothurioida - order not placed in infraclass

References

Euechinoidea on Wikipedia.Wikipedia
Irregularia on Wikispecies.Wikispecies
Category:Irregularia 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: 10.1371/journal.pone.0119248

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