Echinodermata Flashcards Preview

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Flashcards in Echinodermata Deck (3)
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1

What are the echinodermata?

Starfish, sea urchins, brittle stars

2

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

3

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