Test globose, streptospirally enrolled, cham­bers globular, few in number and strongly embracing, only the three chambers of the final whorl visible externally; wall coarsely agglutinated, surface smoothly finished: aperture a low interiomarginal arch. U. Cre­taceous (U. Senonian), Paleocene to L. Eocene: USSR: Carpathians; Oligocene (Balcombian): Australia: Victoria; Holocene: N. Pacific from 542 m to 2,270 m, Mediterranean at 140 m to 240 m; N. Atlantic, Gulf of Mexico and Car­ibbean, from 392 m to 3,562 m.