| Clypeaster Temporal range:
| |
|---|---|
| |
| Live Clypeaster reticulatus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Order: | Clypeasteroida |
| Family: | Clypeasteridae |
| Genus: | Clypeaster Lamarck, 1801 |
Clypeaster, common name "cake urchins" or "sea biscuits", is a genus of echinoderms belonging to the family Clypeasteridae.