†Cystothalamiella ducta Rigby and Potter 1986 (demosponge)
Demospongea - Agelasida - Aphrosalpingidae
Belongs to Cystothalamiella according to J. K. Rigby and A. W. Potter 1986
Sister taxa: Cystothalamiella alaskaensis, Cystothalamiella craticulata, Cystothalamiella irregularis, Cystothalamiella polyducta, Cystothalamiella tuboides
Type specimen: USNM 395880
Ecology: stationary epifaunal suspension feeder