Planispirinella exigua (Brady, 1879b)

Symphonia, Tabita K. & Senthil, Nathan D., 2019, Taxonomic notes on Recent Foraminifera from the Continental Shelf-Slope Region of Southwestern Bay of Bengal, East Coast of India, Palaeontologia Electronica (55 A) 22 (3), pp. 1-89 : 76

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.

Figures

FIGURE 22. 1-2, Spiroloculina parvula Chapman, 1902 in dorsal view (scale equals 300 μm) (1); and in ventral view (scale equals 300 μm) (2). 3-4, Spiroloculina subimpressa Parr, 1950 in dorsal view (scale equals 300 μm) (3) and in ventral view (scale equals 300 μm) (4). 5, Miliolid sp. in dorsal view (scale equals 200 μm). 6, Peneroplis pertusus (Forskål, 1775) in dorsal view (scale equals 500 μm). 7, Peneroplis planatus (Fichtel and Moll, 1798) in dorsal view (scale equals 500 μm). 8, Monalysidium confusa (McCulloch, 1977) in dorsal view (scale equals 500 μm). 9-10, Edentostomina cultrata (Brady, 1881) in dorsal view (scale equals 1 mm) (9) and in ventral view (scale equals 500 μm) (10). 11-12, Edentostomina rupertiana (Brady, 1881) in dorsal view (scale equals 500 μm) (11) and in dorsal view (scale equals 500 μm) (12). 13-14, Planispirinella exigua (Brady, 1879b) in dorsal view (scale equals 500 μm) (13) and in ventral view (scale equals 200 μm) (14). 15, Alveolinella quoii (d’Orbigny, 1826) in dorsal view (scale equals 500 μm). 16, Borelis melo (Fichtel and Moll, 1798) in dorsal view (scale equals 300 μm).