Sphaerospongia is an extinct genus of organism found in marine beds of Devonian age.

Its classification is enigmatic, but it is typically placed among the sponges[2] or the receptaculites.

[3] The organism has a surface covered with hexagonal plates, and some early taxonomists placed it among the echinoderms.

[4] It is found in close association with the horn coral Tabulophyllum traversensis in the Onate Formation of New Mexico, US, where it provides a substrate for the coral.

This poriferan- (or sponge-) related article is a stub.