Theonellidae

Theonellidae is a family of sponges belonging to the order Tetractinellida, which was first described by Robert von Lendenfeld in 1903.
Theonella conica is known for hyperaccumulation of molybdenum due to the action of an endosymbiont microbe, ''Entotheonella sp.''

Genera

Colossolacis Schrammen, 1910DactylocalcitesDiscodermia du Bocage, 1869Manihinea Racodiscula Siliquariaspongia