Clypeastroida (order)
- Scope note
- Members of an order of marine invertebrates having a flat, disk-shaped body, lacking the spherical symmetry of other echinoderms, but having five- or six-rayed markings on their surface; living on the sandy sea bottom of coastal North America south of the Arctic.
- Date of creation: 06-May-2024
Accepted term: 06-May-2024