สัตว์ในไฟลัมเอคไคโนเดอร์มาตา (Echinodermata = Gr echinos, หนาม +

Echinodermata Overview, Characteristics & Respiration echinodermata Characteristics of Phylum Echinodermata Species · Spiny, bumpy skin · Five-sided radial symmetry · Presence of a water vascular system · Tube feet echinodermata Echinodermata ) from the Champlainian Guttenberg Forma- tion of the Upper Mississippi Valley Region J Paleontol 5 : 631-653

echinodermata An echinoderm is any deuterostomal animal of the phylum Echinodermata which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers,