Tetractinellida is an order of sea sponges belonging to the class Demospongiae. First described in 1876, this order received a new description in 2012 and replaced the two orders Astrophorida and Spirophorida, which then became sub-orders as Astrophorina and Spirophorina.
Families
Suborder Astrophorina <small>Sollas, 1887</small>
- Family Ancorinidae <small>Schmidt, 1870</small>
- Family Calthropellidae <small>Lendenfeld, 1907</small>
- Family Corallistidae <small>Sollas, 1888</small>
- Family Geodiidae <small>Gray, 1867</small>
- Family Isoraphiniidae <small>Schrammen, 1924</small>
- Family Macandrewiidae <small>Schrammen, 1924</small>
- Family Neopeltidae <small>Sollas, 1888</small>
- Family Pachastrellidae <small>Carter, 1875</small>
- Family Phymaraphiniidae <small>Schrammen, 1924</small>
- Family Phymatellidae <small>Schrammen, 1910</small>
- Family Pleromidae <small>Sollas, 1888</small>
- Family Theneidae <small>Carter, 1883</small>
- Family Theonellidae <small>Lendenfeld, 1903</small>
- Family Thrombidae <small>Sollas, 1888</small>
- Family Vulcanellidae <small>Cárdenas, Xavier, Reveillaud, Schander & Rapp, 2011</small>
Suborder Spirophorina <small>Bergquist & Hogg, 1969</small>
Suborder Thoosina <small>Carballo, Bautista-Guerrero, Cárdenas, Cruz-Barraza, Aguilar-Camacho, 2018</small>
- Family Thoosidae <small>Cockerell, 1925</small>
References