Euechinoidea

Euechinoidea; Temporal range: Late Triassic – Recent PreꞒ Ꞓ O S D C P T J K Pg N
	Paracentrotus lividus
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Subclass:	Euechinoidea; Bronn, 1860
Superorders
	Diadematacia; Echinacea; Gnathostomata; Atelostomata

The subclass Euechinoidea includes almost all living species of sea urchin, and fossil forms going back as far as the Triassic.

Taxonomy

List of orders according to World Register of Marine Species :

Infra-classis Acroechinoidea
- Order Aspidodiadematoida
- Order Diadematoida
- Order Micropygoida
- Order Pedinoida
Infra-classis Carinacea
- Super-order Calycina
  - Order Phymosomatoida †
  - Order Salenioida
- Super-order Echinacea
  - Order Arbacioida
  - Order Camarodonta
  - Order Stomopneustoida
Order Echinothurioida
Infra-classis Irregularia
- Super-order Atelostomata
  - Order Holasteroida
  - Order Spatangoida
- Order Echinoneoida
- Order Holectypoida †
- Super-order Neognathostomata
  - Order Cassiduloida
  - Order Clypeasteroida
  - Order Echinolampadoida
  - Order Nucleolitidae †

Spatangus purpureus
Astropyga radiata
Paracentrotus lividus
Echinocyamus pusillus
Asthenosoma varium.

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