Echinodermata

Echinodermata

1. Deuterostomes

2. Pentamerous symmetry

3. water vascular/ ambulacral system

4. no excretory

5. Crinoidea

   • sea lillies
   • feather stars
   • can be stalked or comatulid

6. Asteroidea

   • sea stars
   • can regenerate limbs

7. Concentricycloidea

   • sea daisies

8. Ophiuroidea

   • brittle stars
   • basket stars

9. Echinoidea

   • sea urchins
   • Aristotle's lantern
   • regular and irregular

10. Holothuroidea

    • sea cucumbers