Cibicides pachyderma (Rzehak, 1886)

Figure 11.7-9

1886 Truncatulina pachyderma Rzehak, p. 87, pl. 1, fig. 5a-c.

2010 Cibicidoides pachyderma Rzehak; Margreth, p. 121, pl. 33, fig. 2a-c.

Description. Test lenticular, spiral side slightly convex, umbilical side strongly convex, wall calcareous, coarsely perforate, surface smooth; periphery rounded, sutures limbate, curved backwards, slightly depressed on spiral side, radial and depressed in the final chambers on the umbilical side; aperture an interiomarginal arch, bordered by a thick, everted lip.