Taxonomic notes on Recent Foraminifera from the Continental Shelf-Slope Region of Southwestern Bay of Bengal, East Coast of India Author Symphonia, Tabita K. Author Senthil, Nathan D. text Palaeontologia Electronica 2019 55 A 2019-09-30 22 3 1 89 http://dx.doi.org/10.26879/811 journal article 10.26879/811 1094-8074 10961656 Spiroloculina orbis Cushman, 1921 Figure 21.18 1921 Spiroloculina orbis Cushman , p. 403, pl. 83, fig. 3. 2009 Spiroloculina orbis Cushman ; Devi and Rajashekhar, p. 24, fig. 2j. 2013 Spiroloculina orbis Cushman ; Elakkiya and Manivannan, p. 885, fig. 7.4-5. 2014 Spiroloculina orbis Cushman ; Gandhi and Nathan, p. 924, pl. 1, fig. 4a. Description. Test broadly ovate, planispiral, wall porcelaneous, imperforate, surface smooth; final chambers of uniform size overlapping the initial ones; periphery broadly rounded, peripheral margin carinate, sutures distinct, somewhat depressed, slightly arcuate; aperture terminal, round at the end of a carinate neck, bordered by a rim, with a small bifid tooth.