Massilina laevigata (Cushman and Todd, 1944)

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 : 61

Massilina laevigata (Cushman and Todd, 1944)

Figure 17.9

1944 Spiroloculina laevigata Cushman and Todd , p. 67, pl. 9, figs. 26-29.

2014 Spiroloculina laevigata (Cushman and Todd) ; Panchang and Nigam, pl. 6, fig. 19a-b.

Description. Test large, robust, lateral view fusiform, wall calcareous, imperforate, surface smooth; chambers initially compressed, final chambers inflated, chamber arrangement spiroloculine, gradually increasing in size as added; periphery broadly rounded, sutures distinct and very depressed; aperture terminal, round at the end of a short neck, weakly rimmed, with a simple bifid tooth.

Figures

FIGURE 17. 1-2, Cycloforina semiplicata (McCulloch, 1977) in dorsal view (scale equals 500 μm) (1) and in ventral view (scale equals 500 μm) (2). 3-4, Flintina bradyana Cushman 1921 in dorsal view (scale equals 500 μm) (3) and in ventral view (scale equals 500 μm) (4). 5, Hauerina earlandi Rasheed, 1971 in dorsal view (scale equals 300 μm). 6- 7, Hauerina ornatissima (Karrer, 1868) in dorsal view (scale equals 100 μm) (6) and in ventral view (scale equals 100 μm) (7). 8, Lachlanella barnardi (Rasheed, 1971) in dorsal view (scale equals 400 μm). 9, Massilina laevigata (Cushman and Todd, 1944) in dorsal view (scale equals 500 μm). 10, Quinqueloculina agglutinans d’Orbigny, 1839a in dorsal view (scale equals 100 μm). 11-12, Quinqueloculina auberiana d’Orbigny, 1839a in dorsal view (scale equals 500 μm) (11) and in ventral view (scale equals 200 μm) (12). 13, Quinqueloculina bicarinata d’Orbigny, 1826 in dorsal view (scale equals 400 μm). 14-15, Quinqueloculina bosciana d’Orbigny, 1839a in dorsal view (scale equals 200 μm) (14) and in ventral view (scale equals 200 μm) (15). 16, Quinqueloculina exmouthensis Parker, 2009 in dorsal view (scale equals 400 μm).