†family Protetraclisidae Schrammen 1924 (demosponge)
Demospongiae - Tetralithistida - Protetraclisidae
Parent taxon: Tetracladina according to R. M. Finks et al. 2004
Sister taxa: Astrocladiidae, Chenendoporidae, Phymaraphiniidae, Plinthosellidae, Radiocelliidae, Siphoniidae, Sulcastrella, Theonellidae, Vermiculissimum
Subtaxa: Protetraclis Rhizotetraclis Sontheimia
Type: Protetraclis
Ecology: stationary epifaunal suspension feeder
Distribution: