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Flashcards in Echinodermata Deck (3)
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What are the echinodermata?

Starfish, sea urchins, brittle stars


What are the key characters?

Sessile of slow moving,
secondary radial symmetry, larva are bilateral, epidermis become endoskeleton of calcareous plates radiate from central morals, unique water vascular system


What are the classes?

Asteroidea - starfish
Opicroidea - brittle stars
Echinoidea - sea urchins/sand dollars
Crinoidea - sea lollies and feather stars
Holothuroidea - sea cucumbers
Coentrycycloides - sea daises