Phylum: Echinodermata (starfish, brittle stars, sea urchins, sea cucumbers, crinoids)

Life > Eukaryotes > Opisthokonta > Metazoa (animals) > Bilateria > Deuterostomia > Ambulacraria

Classification

Stelleroidea (starfish and brittle stars)

 

 
 

Asteroidea (starfish)

 

 

Ophiuroidea (brittle stars)

 

 

Echinoidea (sea urchins, heart urchins and sand dollars)

 

 

Holothuroidea (sea cucumbers)

 

 

Crinoidea (crinoids)

 

 
  

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