From editor or global species database
Diagnosis Test trochospiral but later chambers may be enveloping; wall perforate, with numerous small pores or fewer larger ones, surface may be covered with narrow elongate nonlamellar monocrystalline spines with calcite c-axis running lengthwise of the spine; aperture interiomarginal, umbilical, umbilical-extraumbilical, or equatorial, and relatively large secondary sutural apertures also may occur. Eocene to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
