†Belemnospongia Ulrich 1889 (demosponge)
Demospongea - Tetractinomorpha
Parent taxon: Tetractinomorpha according to R. M. Finks et al. 2004
Sister taxa: Axinellida, Chondrosida, Criccospongiidae, Hadromerida, Spirophorida, Streptosclerophorida
Subtaxa: Belemnospongia epiradiatus, Belemnospongia parmula
Ecology: stationary epifaunal suspension feeder