Diadematidae
| Diadematidae | |
|---|---|
 |
|
| Diadema setosum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Subclass: | Euechinoidea |
| Superorder: | Diadematacea |
| Order: | Diadematoida |
| Family: |
Diadematidae Gray, 1855 |
The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow.
...
Wikipedia