2. Phylum Echinodermata: Station 8 This includes starfish, and sea urchins and others. They have a simple nervous system similar to the jelly fish. They have spines on their surface. Sea Urchin Brittle Star

3. Echinodermata Samples and Classification Structures Kingdom Animalia ◦ Phylum Echinodermata  Common Name = starfish, sea urchin, britter star, sand dollar, sea cucumbers and etc.  Reproduction = Mostly Sexual (two parents)  Symmetry = mostly radial sometimes bilateral.  Classification Structures 1.Have spines on the surface and radial symmetry. 2. Have 5 rays or arms 3.Have many cells tissues and organs 4.Have a true body cavity  Samples:  8A = Class echnoidea (sea urchin).  8B = Class asteroidea (starfish)  8C = Class echnoidea (sand dollar)