Rhopalodina

Gray, 1853

12 species

Rhopalodiniden with the mouth and anus closely opposed on the end of the neck. The podia are missing on the poles of the sphere. There are 20, simple, branched tentacles, which are worm shaped and in two circles (15 + 5). Calcareous bodies have large grated plates, partly with eccentric standing attachments and true towers. (Heding & Panning, 1954)