| Answer | Crossword Clue |
|---|---|
| coralla | CORALLUM, the skeleton of a coral colony |
| corallum | the skeleton of a coral colony |
| coenosteum | the calcareous skeleton of a coral colony |
| coenosteums | COENOSTEUM, the calcareous skeleton of a coral colony |
| polypidom | a coral, or corallum; also, one of the coral-like structure made by bryozoans and hydroids |
| polypidoms | POLYPIDOM, a coral, or corallum; also, one of the coral-like structure made by bryozoans and hydroids |
