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Following are the PHylum Echinoderms, how to remember them :

  • Asteroidea (sea stars)
  • Ophiuroidea (brittle stars)
  • Echinoidea (sea urchins and sand dollars)
  • Crinoidea (sea lilies or feather stars)
  • Holothuroidea (sea cucumbers)

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Here is a simple trick to remember the classification of Phylum Ehcinoderms:

An ECHO

  • An - Asteroidea
  • E - Echinoidea
  • C - Crinoidea
  • H - Holothuroidea
  • O - Ophiuroidea

This trick is really easy to remember because first three letters of ECHinoderms is same as ECHO. You can connect both very easily. 

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