Polymastiidae
# Polymastiidae

Polymastiidae is a family of demosponges found in oceans throughout the world. It is the only family in the monotypic order Polymastiida. A useful diagnostic characteristic of members of this family is the presence of numerous surface papillae although this feature is shown by some other sponges.

## Genera

The following genera are recognised in the family Polymastiidae

* Acanthopolymastia
* Astrotylus
* Atergia
* Koltunia
* Polymastia
* Proteleia
* Pseudotrachya
* Quasillina
* Radiella
* Ridleia
* Sphaerotylus
* Spinularia
* Tentorium
* Trachyteleia
* Tylexocladus
* Weberella
