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Echinodermata
Fossil range: Cambrian (or earlier?) - Recent
Scientific classification

Domain:

Eukarya

Kingdom:

Animalia

Subkingdom:

Eumetazoa

Superphylum:

Deuterostoma

Phylum:

Echinodermata
Klein, 1734

Subdivisions:

  • HomalozoaGill & Caster, 1960
Homostelea
Homoiostelea
Stylophora
CtenocystoideaRobison & Sprinkle, 1969
  • Crinozoa
Crinoidea
ParacrinoideaRegnéll, 1945
Cystoideavon Buch, 1846
  • Asterozoa
Ophiuroidea
Asteroidea
  • Echinozoa
Echinoidea
Holothuroidea
Ophiocistioidea
Helicoplacoidea
?Arkarua
  • Pelmatozoa
Edrioasteroidea
  • Blastozoa
Blastoidea
EocrinoideaJaekel, 1899

† = Extinct

Echinoderms (Phylum Echinodermata) are a phylum of marine animals. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. Aside from the problematic Arkarua, the first definitive members of the phylum appeared near the start of the Cambrian period.

Mantell's Iguanodon restoration
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