| PHYLUM: |
CNIDARIA |
|
| CLASS: |
ANTHOZOA |
|
| SUBCLASS: | HEXACORALLIA | |
| Mesenteries occur in pairs: | ||
| ACTINARIA | Anemones | |
|
ZOANTHINIARIA |
Zoanthids, e.g., Palythoa | |
|
CORALLIOMORPHARIA |
Disc or coral anemones | |
|
SCLERACTINIA |
Stony corals | |
| Mesenteries occur singly: | ||
| CERIANTHARIA | Tube anemones | |
|
ANTIPATHARIA |
Precious black corals |