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.