Echinoidea (class)
Esquema
Jerarquía
Eukaryota (domain) > Animalia (kingdom) > Echinodermata (phylum)
Descripción
Members of a class containing around 950 living species of marine invertebrates having a globular or discoid form, and a rigid shell composed of many calcareous plates, in some species covered with projecting spines.
Subcategorías
URI original del concepto
Otros términos
- sea urchins [en]
- sea urchin [en]
- sea-urchins [en]
- urchins, sea [en]