Orbulina universa d’Orbigny, 1839 a

Figure 13.21

1839a Orbulina universa d’Orbigny, p. 3, pl. 1, fig. 1. 1983 Orbulina universa d’Orbigny; Kennet and Srinivasan, p. 86, pl. 20, figs. 4-6.

2010 Orbulina universa d’Orbigny; Ovechkina, Bylinskaya and Uken, p. 248, fig. 9H.

Description. Test spherical, wall calcareous, perforate, surface ornamented with many small pores interspersed amidst few larger pores; chambers many, globular, chamber arrangement trochospiral; sutures distinct and depressed; aperture interiomarginal, umbilical, bordered by an imperforate lip in juveniles, areal in adults.