HOEGLUNDINA Brotzen, 1948

 

 

Type species: Rotalia elegans d'Orbigny. 1826 (*2303), p. 272; OD.

Hoeglundina Brotzen. 1984 (*429), p. 92.Epistomina (Hoeglundina) Sala'. 1984 (*2708), p. 584 (nom. transl.).

Test trochospiral, close coiled. biconvex, chambers enlarging gradually, eight or nine in the final whorl, internal partition flat, ear­lier ones resorbed as new chambers are added so that only the final chamber contains an intact partition, sutures curved backward at the periphery on the spiral side, straight and oblique on the umbilical side, periphery sub-acute, carinate; wall calcareous, aragonitic, radial, lamellar, finely perforate, surface smooth; aperture lateromarginal and slitlike, parallel to the peripheral keel and opening on the umbilical side, those of earlier chambers commonly closed by shell material, may have a secondary interiomarginal aperture, inter-cameral foramen interiomarginal. Paleocene to Holocene; cosmopolitan.