†family Triactinellidae Botting 2005 (glass sponge)
Hexactinellida - Reticulosa - Triactinellidae
Full reference: J. P. Botting. 2005. Exceptionally well-preserved Middle Ordovician sponges from the Llandegley Rocks Lagerstätte, Wales. Palaeontology 48(3):577-617
Parent taxon: Protospongioidea according to J. P. Botting 2005
Sister taxon: Protospongiidae
Subtaxa: Triactinella
Ecology: stationary epifaunal suspension feeder
Distribution: found only at Llandegley Rocks (Ordovician of the United Kingdom)