Globorotalia cultrata (d’Orbigny, 1839a)

Figure 14.13-14

1839a Rotalina cultrata d’Orbigny, p. 76, pl. 5, figs. 7-9.

2010 Globorotalia cultrata (d’Orbigny); Ovechkina, Bylinskaya and Uken, p. 235, fig. 3A, 3D.

Description. Test broad, biconvex, wall calcareous, perforate, surface smooth; chambers nearly flat, subrounded on the spiral side, more inflated, subtriangular on the umbilical side, rapidly increasing in size as added, chamber arrangement trochospiral; periphery keeled, sutures arcuate on the spiral side, radial on the umbilical side; aperture interiomarginal, umbilical, low arched, with a plate-like tooth.