Taxa

Echinoidea

Class

Citation Formats

General Reference

Nature Atlas. "Echinoidea." Accessed September 8, 2026. https://nature.interactiveatlas.org/taxa/class-echinoidea.

APA Style

Nature Atlas. (n.d.). Echinoidea. Retrieved September 8, 2026, from https://nature.interactiveatlas.org/taxa/class-echinoidea

BibTeX

@misc{natureatlas-echinoidea,
  author = {Nature Atlas},
  title = {Echinoidea},
  year = {2026},
  url = {https://nature.interactiveatlas.org/taxa/class-echinoidea},
  note = {Accessed September 8, 2026}
}

The sea urchins and sand dollars: echinoderms with a rigid, globular or flattened shell (test) covered in movable spines used for defense and locomotion. Echinoidea graze algae from rock surfaces using a complex five-part jaw structure known as Aristotle's lantern.

Facts

Disputed

Member Species/Taxa Count

950 1

Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.

Taxonomic Rank

Class 1

Scientific Name

Echinoidea 1

Cross-Tradition Connections

Child Taxon Of

Echinodermata

Source Catalogue of Life

Sources

1. Catalogue of Life

Species 2000 & ITIS Catalogue of LifeView the Source

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