†subfamily Gigantospongiinae Rigby and Senowbari-Daryan 1996 (demosponge)
Demospongiae - Agelasida - Auriculospongiidae
Full reference: J. K. Rigby and B. Senowbari-Daryan. 1996. Gigantospongia, new genus, the largest known Permian sponge, Capitan Limestone, Guadalupe Mountains, New Mexico. Journal of Paleontology 70:347-355
Parent taxon: Auriculospongiidae according to R. M. Finks et al. 2004
Sister taxa: Acoeliinae, Auriculospongiinae, Daharellinae, Spinospongiinae
Subtaxa: Gigantospongia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of United States (8: New Mexico collections)
Total: 8 collections each including a single occurrence