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Echinodermata echinodermata

Echinodermata ' to the members of the Palæontographical Society , I deem it necessary to make a few remarks in order to explain

echinodermata Echinodermata ) from the Champlainian Guttenberg Forma- tion of the Upper Mississippi Valley Region J Paleontol 5 : 631-653 Fossil Record Today, Echinodermata is a diverse phylum, with numerous species in five classes: Asteroidea , Crinoidea Phylum Echinodermata Class Asteroidea starfish Click link to view examples Class Ophiuroidea brittle stars Click link to view examples Class Echinoidea

tcas67 Characteristics of Phylum Echinodermata Species · Spiny, bumpy skin · Five-sided radial symmetry · Presence of a water vascular system · Tube feet