Polycyathus
| Polycyathus | |
|---|---|
| Polycyathus muellerae | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Cnidaria | 
| Subphylum: | Anthozoa | 
| Class: | Hexacorallia | 
| Order: | Scleractinia | 
| Family: | Caryophylliidae | 
| Genus: | Polycyathus Duncan, 1876 | 
| Species | |
| See text | |
Polycyathus is a genus of small corals in the order Scleractinia, the stony corals. Most species occur in the Pacific Ocean.