Globorotalia tumida (Brady, 1877)

Figure 14.17-18

1877 Pulvinulina menardii d’Orbigny var. tumida Brady, p. 535.

2010 Globorotalia tumida (Brady); Ovechkina, Bylinskaya and Uken, p. 236, fig. 3G, 3H.

Description. Test large, biconvex, wall thick, calcareous, perforate; chambers slightly inflated, reniform on the spiral side, subtriangular and more inflated on the umbilical side, final chamber slightly compressed, chamber arrangement trochospiral; periphery with thick keel, sutures thick, curved on the spiral side, radial on the umbilical side; aperture extraumbilical, interiomarginal with a plate-like tooth.