Nonion commune (d'Orbigny, 1846)

Figure 7.12

1846 Nonionina communis d’Orbigny, p. 106, pl. 5, figs. 7-8.

2010 Nonion commune (d’Orbigny); Vénec-Peyré and Poignant, p. 488, fig. 3I-J.

Description. Test elongate-ovate, compressed, umbilical area depressed, wall calcareous, finely perforate, surface smooth, umbilicus, apertural side and to a very little extent along the sutures granulated; chambers distinct, slightly inflated, increasing in size as added, final chamber elongate; periphery subacutely rounded, sutures distinct, very slightly depressed, limbate and strongly curved; aperture an interiomarginal opening at the base of the long apertural face.