形態特徵:Shell' oval-conic with protoconch' conic' up to 3+ whorls; subsequent whorls' deeply sutured. Sculpture of ribs and spiral straie with domination of spirals at the bottom. Aperture' ovate' produced below; outer lip' thin or weakly variced. Operculum and animal unknown. But Ponder (l984) and Vaught (l989) put it under this family.