†Thaumastocoelia cassiana Steinmann 1882 (demosponge)
Demospongea - Agelasida - Thaumastocoeliidae
Belongs to Thaumastocoelia according to Steinmann 1882
Sister taxa: Thaumastocoelia dolomitica, Thaumastocoelia irregularis, Thaumastocoelia ovoidalis, Thaumastocoelia sphaeroida
Ecology: stationary epifaunal suspension feeder