†family Ethmocoscinidae Zhuravleva 1957 (archaeocyath sponge)
Archaeocyatha - Ajacicyathida - Ethmocoscinidae
Parent taxon: Ethmocoscinoidea according to F. Debrenne et al. 2015
Sister taxon: Tumulocoscinidae
Subtaxa: Ethmocoscinus
Type: Ethmocoscinus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution: found only at Yorke Peninsula, Tepper's Knoll, Koolywurtie bioherms (Cambrian of Australia)