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 Lenticulina orbicularis (d’Orbigny, 1826) Figure 2.6-7 1826 Robulina orbicularis d’Orbigny , p. 288, pl. 15, figs. 8-9. 2010 Lenticulina orbicularis (d’Orbigny) ; Margreth, p. 150, pl. 12, fig. 8a-b. 2012 Lenticulina orbicularis (d’Orbigny) ; Debenay, p. 224. 2012 Lenticulina orbicularis (d’Orbigny) ; Milker and Schmiedl, p. 73, figs. 18.19-20. Description. Test rounded, strongly biconvex, peripheral view lenticular, wall finely perforate, surface smooth, umbo prominent; chambers many, narrow; periphery with a thick keel, sutures strongly curved; aperture terminal, radiate, with a slit on the apertural side.