Exclusively marine invertebrates with a distinctive five-part radial body symmetry as adults, a calcium-carbonate endoskeleton just beneath the skin, and a unique water-vascular system of fluid-filled canals used for movement and feeding. Echinodermata includes sea stars, sea urchins, brittle stars, sea cucumbers and feather stars.
Facts
Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Classification
Living or Extinct Connections
Child Taxon Of
Parent Taxon Of
Source Wikidata: Ophiuroidea
Source Wikidata: Crinoidea
Source Wikidata: Holothuroidea
Sources
1. Wikidata (taxon extant/extinct status)
Wikimedia Foundation / Wikidata contributorsQ44631, descriptionView the Source 2. Catalogue of Life
Wikidata: Echinodermata
Wikidata: Holothuroidea
Parent Taxon Of: Sea Cucumber, Wikidata parent-taxon (P171) chainView the Source Wikidata: Ophiuroidea
Parent Taxon Of: Brittle Star, Wikidata parent-taxon (P171) chainView the Source Wikidata: Crinoidea
Parent Taxon Of: Feather Star, Wikidata parent-taxon (P171) chainView the Source Reader Challenges (0)
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