Monotypic sponge genera

Tribrachium is a monotypic genus of sponges belonging to the family Ancorinidae. The only species is Tribrachium schmidtii.

thumb Monorhaphis is a monotypic genus of siliceous deep sea Hexactinellid sponges. The single species is the type species Monorhaphis chuni, a sponge known for creating a single giant basal spicule (G.B.S.) to anchor the sponge in the sediments. The species was described by Franz Eilhard Schulze in 1904 from specimens collected by the German Deep Sea Expedition in 1898–1899. Monorhaphis is also the only genus in the monotypic family Monorhaphididae.

Lamontia is a genus of calcareous sponges in the family Baeriidae. It consists of one species, Lamontia zona Kirk, 1895. The genus and species were described by New Zealand biologist Harry Borrer Kirk in 1895. The type locality of Lamontia zona is Cook Strait, New Zealand.

Leucyssa is a genus of calcareous sponges in the family Trichogypsiidae. It consists of one species, Leucyssa spongilla.

Pseudospongosorites is a genus of sea sponges belonging to the family Suberitidae. Currently, the genus is considered as monotypic, consisting of a single species Pseudospongosorites suberitoides. It is found in the Caribbean Sea, the Gulf of Mexico and on the Atlantic coast of the United States as far north as North Carolina. This species is known by the common name Florida hermit crab sponge, so named because hermit crabs often use it as shelter.

Fascaplysinopsis is a monotypic genus of sponges belonging to the family Thorectidae. The only species is Fascaplysinopsis reticulata.

Kuarrhaphis is a genus of calcareous sponges in the family Trichogypsiidae. It consists of one species, Kuarrhaphis cretacea.

Eilhardia is a genus of calcareous sponges in the family Baeriidae. It contains one species, Eilhardia schulzei.

Sycute is a genus of calcareous sponge belonging to the family Grantiidae. The only species is Sycute dendyi (Kirk, 1895).

Tethyspira is a monotypic genus of sponges belonging to the family Dictyonellidae. The only species is Tethyspira spinosa.

Pachydictyum is a genus of freshwater sponge in the family Malawispongiidae. It is monotypic and represented by a single species, Pachydictyum globosum. It lives in Sulawesi, Indonesia.

Teichonopsis is a genus of calcareous sponge belonging to the family Grantiidae. The only species is Teichonopsis labyrinthica (Carter, 1878).

Synute is a genus of calcareous sponge belonging to the family Grantiidae. The only species is Synute pulchella Dendy, 1892.

Sycodorus is a genus of calcareous sponge belonging to the family Grantiidae. The only species is Sycodorus hystrix Haeckel, 1872.

Lepidoleucon is genus of calcareous sponges in the order Baerida. It is the only genus in the monotypic family Lepidoleuconidae, and consists of a single species, Lepidoleucon inflatum.

Citronia is a genus of sea sponges in the family Dysideidae. It consists of one species, Citronia vasiformis (Bergquist, 1995), which Bergquist originally described as Euryspongia vasiformis, from a specimen found in the Baie de Citrons, New Caledonia at a depth of 8 to10 m.

Claviscopulia is a genus of glass sponge in the family Farreidae.

Leucettaga is a genus of calcareous sponge belonging to the family Grantiidae. The only species is Leucettaga loculifera (Haeckel, 1872).

Houssayella is a genus of freshwater sponges in the family Metaniidae.

genus of sponges

Sycyssa is a genus of calcareous sponges belonging to the family Lelapiidae. It is monotypic, containing a single species, Sycyssa huxley.