†family Plinthosellidae Schrammen 1910 (demosponge)
Demospongiae - Tetralithistida - Plinthosellidae
Parent taxon: Tetracladina according to R. M. Finks et al. 2004
Sister taxa: Astrocladiidae, Chenendoporidae, Phymaraphiniidae, Protetraclisidae, Radiocelliidae, Siphoniidae, Sulcastrella, Theonellidae, Vermiculissimum
Subtaxa: Claytonia Hazelina Ingentilotus Plinthosella Pycnodesma
Type: Plinthosella
Ecology: stationary epifaunal suspension feeder
Distribution: