Bolivina spathulata (Williamson, 1858)

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 : 39

Bolivina spathulata (Williamson, 1858)

Figure 10.20

1858 Textularia variabilis var. spathulata Williamson , p. 76, pl. 6, figs. 164-165.

2002 Brizalina spathulata (Williamson) ; Kaminski, Aksu, Box, Hiscott, Filipescu, and Al-Salameen, p. 172, pl. 2, fig. 9.

2003 Brizalina spathulata (Williamson) ; Murray, p. 19, fig. 6.3.

2012 Brizalina spathulata (Williamson) ; Milker and Schmiedl, p. 82, fig. 20.1-2.

2014 Brizalina spathulata (Williamson) ; Panchang and Nigam, pl. 23, figs. 42-43.

Description. Test broad, elongate and compressed, wall calcareous, perforate, more at chamber margins, surface smooth; chambers gradually increase in size, biserially arranged; periphery subacutely rounded, sutures inclined, slightly depressed in the final chambers; aperture elongate, slit-like opening, bordered by a lip.

Figures

FIGURE 10. 1, Bulimina aculeata d'Orbigny, 1826 in dorsal view (scale equals 200 μm). 2, Bulimina marginata d'Orbigny, 1826 in dorsal view (scale equals 200 μm). 3-4, Bulimina striata d'Orbigny in Guérin-Méneville, 1843 in ventral view (scale equals 300 μm) (3) and in apertural view (scale equals 100 μm) (4). 5, Globobulimina turgida (Bailey, 1851) in dorsal view (scale equals 400 μm). 6-8, Reussella haizumensis Asano, 1950 in dorsal view (scale equals 300 μm) (6); in closer view (scale equals 100 μm) (7); and in apertural view (scale equals 200 μm) (8). 9, Reussella spinulosa (Reuss, 1850) in dorsal view (scale equals 100 μm). 10, Valvobifarina mackinnonii (Millett, 1900a) in dorsal view (scale equals 300 μm). 11, Bolivina obscura He, Hu and Wang, 1965 in dorsal view (scale equals 200 μm). 12, Bolivina cistina Cushman, 1936 in dorsal view (scale equals 100 μm). 13, Bolivina dilatata Reuss, 1850 in dorsal view (scale equals 200 μm). 14-15, Bolivina kuriani (Seibold, 1975) in ventral view (scale equals 200 μm) (14) and in dorsal view (scale equals 100 μm) (15). 16-17, Bolivina persiensis Lutze, 1974 in dorsal view (scale equals 200 μm) (16) and in dorsal view (scale equals 200 μm) (17). 18-19, Bolivina pusilla Schwager, 1866 in dorsal view (scale equals 200 μm) (18) and in ventral view (scale equals 200 μm) (19). 20, Bolivina spathulata (Williamson, 1858) in dorsal view (scale equals 300 μm). 21, Bolivina striatula Cushman, 1922a in dorsal view (scale equals 200 μm). 22, Pseudobrizalina lobata (Brady, 1881) in dorsal view (scale equals 200 μm). 23, Sagrinella durrandii (Millett, 1900b) in dorsal view (scale equals 100 μm). 24, Saidovina karreriana (Brady, 1881) in dorsal view (scale equals 300 μm). 25, Loxostomina amygdalaeformis (Brady, 1881) in dorsal view (scale equals 500 μm). 26, Loxostomina mayori (Cushman, 1922) in dorsal view (scale equals 300 μm).