- Sertularia and Sertularella are two very common genera of this family.
- Colony of Dinobryon sertularia, Ehr.; X200 (Chrysomcnadidae).
- Genera: (a) Fixata: Isis, Gorgonia, Alcyonium, Spongia, Flustra, Tubularia, Corallina, Sertularia, Vorticella.
- Some of the branching forms have a distinct outward resemblance to the polyparies of Sertularia and Plumularia among the recent Hydroida (Calyptoblastea); in none of the unbranching forms, however, is the similarity by any means close.