Animal Diversity Web: Echinodermata - Sea Stars, Sea Urchins, Sea Cucumbers, and Relatives

Echinodermata has approximately 7000 described living species and about 13,000 extinct species known from the fossil record. This phylum is the largest without any freshwater or terrestrial forms. (Brusca and Brusca, 2003; Waggoner, 1999)

Publisher - University of Michigan

Subjects - Echinodermata; Echinoderm, Sea Urchin, Diadema antillarum

http://animaldiversity.ummz.umich.edu/accounts/Echinodermata/

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Citation: Mulcrone RS. 2005. Animal Diversity Web: Echinodermata - Sea Stars, Sea Urchins, Sea Cucumbers, and Relatives. Ann Arbor, MI: University of Michigan. http://animaldiversity.ummz.umich.edu/accounts/Echinodermata/