rugose coral
C34508
concept
A rugose coral is an extinct order of solitary or colonial Paleozoic corals characterized by horn-shaped or wrinkled calcareous skeletons with well-defined internal septa.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| reef-building organism | 1 |
Instances (2)
| Instance | Via concept surface |
|---|---|
| Hexagonaria percarinata | — |
| Archaeocyatha | reef-building organism |