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Clypeasteroida  (7)
Crinoidea  (3)
Echinoidea  (14)
Holothuroidea  (12)
Stelleroidea  (14)

Classification of the Extant Echinodermata - Describes the taxonomic groupings and provides links to images of some taxa.
Echinodermata - Characteristics and phylogeny of the spiny-skinned animals: sea urchins, starfish, and their allies.
Echinoderms - Descriptions of the major species of Echinodermata (starfish, brittle star, sea urchin, feather star, sea cucumber) with illustrations and links to photos.
Gallery of Echinoderm Larvae - A collection of photographs of developing starfish and sea urchins with information about each.
Introduction to the Echinodermata - Overview of the systematics and ecology of starfish, brittle stars, sea cucumbers, sea urchins, and sand dollars.
Phylum Echinodermata - Some characteristics of the phylum that includes starfish, sea cucumbers, sea urchins, crinoids and brittle stars.
Sea and Sky: Echinoderms - A brief description of the phylum followed by a long list of annotated photographs.