1. The Deuterostome lineage
Echinodermata
The Deuterostome lineage

2. Echinoderm attributes
Penta-radial symmetry
Water-vascular system
Nature of integument (spinosous)
Coelomic space separate and distinct from vascular system
Larval and adult stages occupy different habitats (metamorphosis)

3. Echinoderm classsification
Crinoidea--sea lillies
Stelleroidea--star shaped
Asteroidea-sea stars
Ophiuroidea-brittle stars
Echinoidea-regular irregular urchins
Holothuroideasea cucumbers

4. Water-Vascular system
Components
Tube feet
Radial canals
Circular canal
Stone canal
Madreporite
Modified in other orders for different purposes

5. Coelomic space
Respiration-dermobranchiae
Skeleton
Space reproduction

6. Nervous system
Sub-epithelial nerve net
Deep system

7. Patterns of development
Metamorphosis
Dipleurula larva