Nota de aplicación
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.
Ubicación jerarquía
- faceta agentes
- .. organismo vivo (nombre jerárquico)
- .... organismo vivo (entidad)
- ...... Eucariota (dominio)
- ........ animal (reino)
- .......... Echinodermata (phylum)
- ............ Echinoidea (class)
- .............. Clypeastroida (order)