Miliolinella circularis (Bornemann, 1855)

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 : 66

Miliolinella circularis (Bornemann, 1855)

Figure 19.9

1855 Triloculina circularis Bornemann , p. 349, pl. 19, fig. 4.

2012 Miliolinella circularis (Bornemann) ; Debenay, p. 109.

2014 Miliolinella circularis (Bornemann) ; Panchang and Nigam, pl. 11, fig. 10a-b.

Description. Test subovate to round, side view circular, wall calcareous, surface smooth; chambers inflated, three chambers visible, milioline chamber arrangement; periphery rounded, sutures distinct; aperture terminal, a large low arch opening bordered by a well-developed lip with a simple tooth.

Figures

FIGURE 19. 1-2, Quinqueloculina undulose costata Terquem 1882 in dorsal view (scale equals 500 μm) (1) and in ventral view (scale equals 500 μm) (2). 3-4. Quinqueloculina venusta Karrer, 1868 in dorsal view (scale equals 500 μm) (3) and in ventral view (scale equals 400 μm) (4). 5, Quinqueloculina vulgaris d’Orbigny, 1826 in dorsal view (scale equals 100 μm). 6-8, Cribromiliolinella milletti (Cushman, 1954) in dorsal view (scale equals 500 μm) (6); in dorsal view (scale equals 400 μm) (7); and in dorsal view (scale equals 500 μm) (8). 9, Miliolinella circularis (Bornemann, 1855) dorsal view (scale equals 300 μm). 10-11, Miliolinella subrotunda (Montagu, 1803) in dorsal view (scale equals 100 μm) (10) and in ventral view (scale equals 200 μm) (11). 12-13, Miliolinella webbiana (d’Orbigny, 1839b) in dorsal view (scale equals 500 μm) (12) and in ventral view (scale equals 500 μm) (13). 14-16, Pseudotriloculina kerimbatica (Heron-Allen and Earland, 1939) in apertural view (scale equals 400 μm) (14); in dorsal view (scale equals 500 μm) (15); and in ventral view (scale equals 300 μm) (16). 17-18, Pseudotriloculina linneiana (d’Orbigny, 1839a) in dorsal view (scale equals 300 μm) (17) and in apertural view (scale equals 200 μm) (18).