Echinozoa
Subphylum of marine invertebrates
From Wikipedia, the free encyclopedia
Echinozoa is a subphylum of free-living echinoderms in which the body is or originally was a modified globe with meridional symmetry. Echinozoans lack arms, brachioles or other appendages, and do not at any time exhibit pinnate structure.[1] Their two extant classes are the sea urchins and the sea cucumbers.
.jpg)
Phylum:Echinodermata
Subphylum:Echinozoa
| Echinozoa Temporal range: | |
|---|---|
| |
| A sea cucumber (Apostichopus californicus) among sea urchins (Strongylocentrotus purpuratus and Mesocentrotus franciscanus) in California, United States | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Subphylum: | Echinozoa |
| Classes | |
† = Extinct | |
.svg){kind=small}