Spiroloculina depressa d’Orbigny, 1826

Figure 21.9

1826 Spiroloculina depressa d’Orbigny; p. 298, no.1.

2001 Spiroloculina depressa d’Orbigny; Szarek, p. 101, pl. 11, fig. 17.

2006 Spiroloculina depressa d’Orbigny; Oflaz, pp. 151-152, pl. 11, fig. 6.

Description. Test robust, wall porcelaneous, imperforate, surface smooth; chambers arcuate, gradually increasing in size as added, opposite sides of the chambers very concave; peripheral margin convex, sutures distinct and very much depressed; aperture terminal, circular, at the end of a thick neck, with a simple tooth, bordered by a lip.