Phylum Echinodermata – General Biology

echinodermata  Echinodermata The six thousand species of marine animals in the phylum Echinodermata are, like annelids, arthropods, chordates, and mollusks, Echinodermata · Environment marine, brackish, fresh, terrestrial · Fossil range recent + fossil · Original description Klein, · Descriptive notes

Echinodermata ) from the Champlainian Guttenberg Forma- tion of the Upper Mississippi Valley Region J Paleontol 5 : 631-653 The features of echinodermata are as follows: These are aquatic only species Bilateral symmetry of the larval forms, and radial symmetry of the adult forms Is

Echinodermata is a phylum of about 7000 living species distributed among five classes: Echinoidea , Holothuroidea , An echinoderm is any deuterostomal animal of the phylum Echinodermata which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers,