Fissurina orbignyana Seguenza, 1862

Figure 3.2

1862 Fissurina orbignyana Seguenza, p. 66, pl. 2, figs. 25-26.

2003 Fissurina orbignyana Seguenza; Murray, p. 17, fig. 5.5-6.

2012 Fissurina orbignyana Seguenza; Milker and Schmiedl, p. 79, fig. 19.13.

Description. Test subrounded, wall calcareous, thickly perforated, surface ornamented with short spines; single-chambered; periphery with three prominent keels; aperture terminal, an irregular oval-shaped opening, bordered by a thick lip.