Planispirinella exigua (Brady, 1879b)

Figure 22.13-14

1879b Hauerina exigua Brady, p. 267.

2006 Planispirinella exigua (Brady); Oflaz, p. 141, pl. 1, figs. 10-11; pl. 11, fig. 3.

2012 Planispirinella exigua (Brady); Debenay, p. 114.

Description. Test disc-shaped, flattened, central part slightly convex, outline circular, surface smooth, slightly convex at the growth lines; chambers rapidly increasing in size as added, coiling evolute; periphery rounded, sutures depressed; aperture terminal, at the end of the tubular chamber, long, slit-like, cribate trematophore.