From editor or global species database
Diagnosis Test enrolled, involute, or rarely uncoiling; agglutinated wall with outer imperforate layer and inner alveolar layer, septal structure always differentiated from that of outer wall; aperture interiomarginal or near septal base. L. Jurassic to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]