Nomenclature
original description
Loeblich, A. R.; Tappan, H. (1964). Treatise on Invertebrate Paleontology, Part C: Protista 2, Sarcodina, chiefly "Thecamoebians" and Foraminiferida. <em>Geological Society of America and University of Kansas Press, Lawrence.</em> [details] Available for editors
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From editor or global species database
Diagnosis Test trochospiral; wall of hyaline, perforate, optically radial calcite; surface of umbilical side commonly with radial striae, costae, or nodes; aperture interiomarginal and umbilical; sexual reproduction plastogamic, the two gamont tests becoming firmly attached by their umbilical surfaces, which are then resorbed centrally to form a brood chamber for the fusion of gametes and early zygote development. L. Eocene (Cuisian) to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]