Nonionoides elongatum (d'Orbigny, 1852)

Figure 7.16

1852 Nonionina elongata d’Orbigny, p. 3, fig. 4.

1999 Nonion elongatum (d’Orbigny); Nigam and Khare, p. 298, pl. 6, fig. 6.

2014 Nonion elongatum (d’Orbigny); Panchang and Nigam, pl. 39, fig. 12a-c.

Description. Test elongate, biumbilicate, wall finely perforate, surface smooth, umbilical portion depressed, papillated, granular pustules to some extent along the sutures and the apertural face; chambers distinct, many, increasing rapidly in size as added, coiling involute; periphery broadly rounded, sutures distinct, slightly depressed and curved; aperture a interiomarginal, narrow, low arch opening on the apertural face.