Tetractinellida
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 Sollas, 1887
- Family Ancorinidae Schmidt, 1870
- Family Calthropellidae Lendenfeld, 1907
- Family Corallistidae Sollas, 1888
- Family Geodiidae Gray, 1867
- Family Isoraphiniidae Schrammen, 1924
- Family Macandrewiidae Schrammen, 1924
- Family Neopeltidae Sollas, 1888
- Family Pachastrellidae Carter, 1875
- Family Phymaraphiniidae Schrammen, 1924
- Family Phymatellidae Schrammen, 1910
- Family Pleromidae Sollas, 1888
- Family Theneidae Carter, 1883
- Family Theonellidae Lendenfeld, 1903
- Family Thrombidae Sollas, 1888
- Family Vulcanellidae Cárdenas, Xavier, Reveillaud, Schander & Rapp, 2011
; Suborder Spirophorina Bergquist & Hogg, 1969
; Suborder Thoosina Carballo, Bautista-Guerrero, Cárdenas, Cruz-Barraza, Aguilar-Camacho, 2018
