Monalysidium confusa (McCulloch, 1977)

Figure 22.8

1977 Spirolina confusa McCulloch, p. 231, pl. 100, fig. 9.

2012 Monalysidium confusa (McCulloch); Debenay, p. 111.

Description. Test robust, compressed, wall calcareous, surface ornamented with faint ribs, pitted in regular rows; chambers involute and planispirally arranged initially, later uncoiled, final chambers more inflated, periphery rounded, sutures radial, slightly arcuate initially, nearly horizontal later; aperture centred, areal, bordered by a lip, with teeth.