†family Tethyidae Gray 1867 (demosponge)
Demospongiae - Protomonaxonida - Tethyidae
Parent taxon: Protomonaxonida according to R. M. Finks et al. 2004
See also Wagner 1970 and Worheide et al. 2012
Sister taxa: Choiidae, Halichondritidae, Hamptoniidae, Hazeliidae, Heliospongiidae, Leptomitidae, Lobatospongia, Mahalospongiidae, Piraniidae, Sinospongiidae, Sollasellidae, Takakkawiidae, Ulospongiellidae, Wapkiidae
Subtaxa: Tethya
Type: Tethya
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution: