| They range in size from tiny zooids that live together in large matrix materials to large solitary individuals such as the cunjevoi. |
| The individuals of the colony are called zooids and many zooids with individual siphonal openings cover the surface of the colony. |
| These are marine bryozoans with tubular zooids with strongly calcified walls. |
| The skeletal morphology of monticular zooids in H. portelli suggests that specialized male polymorphs may not have evolved by Late Eocene times. |
| The feeding zooids use retractile tentacles, called the lophophore, to filter feed and have a U-shaped gut for digestion. |
| Even in the earliest stages of new growth, complete reversals in budding directions of zooids are evident. |
