†Spongomassa gigantea Won and Below 1999 (radiolarian)
Full reference: M.-Z. Won and R. Below. 1999. Cambrian Radiolaria from the Georgina Basin, Queensland, Australia. Micropaleontology 45(4):325-363
Belongs to Spongomassa according to M.-Z. Won and R. Below 1999
Sister taxon: Spongomassa nannosphaera
Type specimen: 7431S-76265, a test
Ecology: passively mobile planktonic omnivore