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 294848 10.26879/811 d1000324-a875-4ee8-805d-0f61ee41f4d7 1094-8074 10961656 Neorotalia calcar (d’Orbigny, 1839a) Figure 5.3-6 1839a Calcarina calcar d’Orbigny , p. 81, pl. 5, figs. 22-24. 2012 Neorotalia calcar (d’Orbigny) ; Debaney, pp. 204-205. Description. Test biconvex, wall calcareous, perforate, surface ornamented with distinct, round and thick pustules on the dorsal side, ridges and many umbilical knobs on the ventral side; chambers many, slightly inflated and coiling evolute on the spiral side, involute on the umbilical side, trochospirally arranged; periphery angular, star-shaped with stout spines, sutures tilted and slightly depressed on the spiral side, radial and depressed on the umbilical side; primary aperture umbilical, low-arched opening bordered by a lip, secondary apertures peripheral, bordered by a lip.