†family Spongentactiniidae Nazarov 1975 (radiolarian)
Parent taxon: Entactinaria according to P. De Wever et al. 2001
Sister taxa: Braginella, Centrocubidae, Ellisus, Entactiniidae, Eptingiidae, Haplentactinia, Haplentactiniidae, Heptacladidae, Hexalonchidae, Hexastylidae, Hindeosphaeridae, Inaniguttidae, Kahlerosphaera, Kungalariidae, Multiarcusellidae, Palaeolithocycliidae, Palaeoscenidiidae, Pentactinocarpidae, Polyentactiniidae, Protoentactiniacea, Proventocitidae, Pylentonemidae, Quinquecapsulariidae, Radium, Rhizosphaeridae, Saturnalidae, Sphaeroentactiniidae, Spongosaturnaloididae, Thalassothamnidae
Subtaxa: Duodecimentactinia, Multientactinia, Plenoentactinia, Provisocyntra, Retentactinia, Retisphaera
Type: Spongentactinia
Ecology: passively mobile planktonic omnivore