Holopeidae†Holopeidae is an extinct family of paleozoic gastropod mollusks. These molluscs were stationary epifaunal suspension feeders.This family is unassigned to superfamily. This family has no subfamilies.GeneraGenera in the family Holopeidae include:CycloraEopagodeaHolopea J. Hall, 1847Pachystrophia Perner, 1903Ptychonema Perner, 1903Raphistomina Ulrich & Scofield, 1897Sinutropis Perner, 1903 but in family EuomphalidaeUmbospira Perner, 1903