Gaudryina convexa (Karrer, 1865)

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 : 17

Gaudryina convexa (Karrer, 1865)

Figure 4.2

1865 Textilaria convexa Karrer , p. 78, pl. 16, fig. 8a-c.

2012 Gaudryina convexa (Karrer) ; Debenay, p. 81. 2014 Gaudryina convexa (Karrer) ; Panchang and Nigam, pl. 2, fig. 19a-b.

Description. Test triangular, wall coarsely agglutinated, surface rough; final chambers broad, tapering towards the apex, flat on one side, strongly convex on the opposite side; periphery subacutely rounded, sutures depressed; apertural side obliquely truncate, aperture a low depression in the final chamber, bordered by a lip.

Figures

FIGURE 4. 1, Gaudryina angulata Cushman, 1924 in dorsal view (scale equals 300 μm). 2, Gaudryina convexa (Karrer, 1865) in dorsal view (scale equals 300 μm). 3, Reophax agglutinatus Cushman, 1913 in dorsal view (scale equals 500 μm). 4-5, Reophax scorpiurus de Montfort, 1808 in dorsal view (scale equals 500 μm) (4) and in dorsal view (scale equals 400 μm) (5). 6, Nodulina dentaliniformis (Brady, 1881) in dorsal view (scale equals 500 μm). 7-8, Ammonia beccarii (Linnaeus, 1758) in dorsal view (scale equals 100 μm) (7) and in ventral view (scale equals 500 μm) (8). 9-10, Ammonia parkinsoniana (d’Orbigny, 1839) in dorsal view (scale equals 200 μm) (9) and in ventral view (scale equals 200 μm) (10). 11-12, Ammonia tepida (Cushman, 1926) in dorsal view (scale equals 200 μm) (11) and in ventral view (scale equals 200 μm) (12). 13-14, Asterorotalia dentata (Parker and Jones, 1865) in dorsal view (scale equals 500 μm) (13) and in ventral view (scale equals 500 μm) (14). 15-16, Asterorotalia inflata (Millett, 1904) in dorsal view (scale equals 100 μm) (15) and in ventral view (scale equals 100 μm) (16). 17-18, Rotalidium annectens Parker and Jones, 1865 in dorsal view (scale equals 500 μm) (17) and in ventral view (scale equals 400 μm) (18). 19- 21, Rotalinoides compressiuscula (Brady, 1884) in dorsal view (scale equals 200 μm) (19); in ventral view (scale equals 200 μm) (20); and in lateral view (scale equals 100 μm) (21).