Taxonomic notes on Recent Foraminifera from the Continental Shelf-Slope Region of Southwestern Bay of Bengal, East Coast of India Symphonia, Tabita K. Senthil, Nathan D. Palaeontologia Electronica 2019 55 A 2019-09-30 22 3 1 89 4TG5K (Williamson, 1858) Williamson 1858 [908,1372,1366,1391] Globothalamea Nonionidae Nonionoides Chromista Rotaliida 27 28 Foraminifera species turgida   Figure 7.18 1858  Rotalina turgidaWilliamson, p. 50, pl. 4, figs. 95-97. 2003  Nonionella turgida(Williamson); Murray, p. 25, fig. 9.4-5. 2012  Nonionella turgida(Williamson); Milker and Schmiedl, p. 113, fig. 26.1-6.  Description.Test elongate, compressed, wall calcareous, finely perforate, surface smooth, apertural side with distinct flap-like projection; chambers distinct, long and narrow, chamber arrangement trochospiral, rapidly increasing in size; periphery rounded, slightly lobulate, sutures distinct, not much depressed, aperture interiomarginal, an equatorial slit-like opening.