Echinoderms

Echinodermata

Echinodermata (echinoderms) is a phylum in the kingdom Animalia, containing 6,966 described species.

Scientific classification

Classes

• Brittle StarsOphiuroidea1,864
• Sea StarsAsteroidea1,841
• Sea CucumbersHolothuroidea1,654
• Sea Urchins and Sand DollarsEchinoidea973
• Feather Stars and Sea LiliesCrinoidea634