Irregularia

Translingual

Etymology

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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
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. doi: 10.1371/journal.pone.0119248. pmid:25923521

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