Nonionella basispinata (Cushman and Moyer, 1930)

Figure 7.14

1930 Nonion pizarrensis Berry var. basispinata Cushman and Moyer, p. 54, pl. 7, fig. 18.

2008 Pseudononion basispinata (Cushman and Moyer); Riveiros and Patterson, p. 30, fig. 12.6a-b.

2014 Nonion basispinata (Cushman and Moyer); Panchang and Nigam, pl. 33, fig. 8a-c.

Description. Test small, asymmetrical, wall calcareous, finely perforate, surface smooth, granular pustules filling the umbilicus, apertural side and to a little extent along the sutures; chambers slightly inflated, rapidly increasing in size, planispirally arranged, coiling involute; periphery subrounded, sutures distinct, very slightly depressed and curved; aperture an interiomarginal, narrow, equatorially placed slit at the base of the apertural face.