Sphaerocoeliids are one of several unrelated sponge groups described as "sphinctozoans", with a distinctive multi-chambered body structure.

Sphaerocoeliids persisted from the Permian to the Cenomanian stage of the Cretaceous, a longer period of time than most other "sphinctozoans".

[1][2] "Sphinctozoans" and the similar "inozoans" were historically grouped together in the polyphyletic order Pharetronida.

Each layer is pierced by a central osculum (outflow vent), which has the form of a simple hole.

Sphaerocoeliids are hypermineralized, with a skeleton of loose calcareous spicules cemented together in calcite walls.