Hansenisca soldanii (d’Orbigny, 1826)

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 : 45

Hansenisca soldanii (d’Orbigny, 1826)

Figure 12.6-7

1826 Gyroidina soldanii d’Orbigny , p. 278, no. 5.

2010 Gyroidina soldanii (d’Orbigny) ; Margreth, p. 125, pl. 40, fig. 1a-c.

2012 Hansenisca soldanii (d’Orbigny) ; Debenay, p. 197.

2012 Gyroidinoides soldanii (d’Orbigny) ; Milker and Schmiedl, p. 116, fig. 26.20-21.

Description. Test round in outline, flat on the spiral side, strongly convex on the umbilical side, wall calcareous, finely perforate, surface smooth; chambers arranged trochospirally, coiling evolute on the dorsal side, involute on the ventral side; periphery truncate, sutures radial, slightly curved and depressed on the umbilical side; aperture interiomarginal, an equatorial low arch opening, bordered by a lip, secondary apertures partially covered by an external flap.

Superfamily NUMMULITOIDEA de Blainville, 1827

Family NUMMULITIDAE de Blainville, 1827

Genus OPERCULINA d’Orbigny, 1826

Operculina ammonoides (Gronovius, 1781)

Figure 12.8

1781 Nautilus ammonoides Gronovius , p. 282, pl. 19, figs. 5-6.

2004 Operculina ammonoides (Gronovius) ; Hohenegger, p. 151, text-fig. 2.1.

2011 Operculina ammonoides (Gronovius) ; Hohenegger, p. 659, fig. 2b.

2012 Operculina ammonoides (Gronovius) ; Debenay, p. 228.

Description. Test large, planispiral, compressed, surface well-ornamented, tubercles slightly raised in the umbilical area; chambers flat, not divided, coiling evolute; periphery with a thin keel, sutures marked with pustules, slightly depressed at the periphery; aperture at the end of the apertural face.

Figures

FIGURE 12. 1-2, Lobatula lobatula (Walker and Jacob, 1798) in dorsal view (scale equals 400 μm) (1) and in ventral view (scale equals 100 μm) (2). 3-4, Cymbaloporetta bradyi (Cushman, 1915) in dorsal view (scale equals 200 μm) (3) and in ventral view (scale equals 300 μm) (4). 5, Riminopsis asterizans (Fichtel and Moll, 1798) in dorsal view (scale equals 200 μm). 6-7, Hansenisca soldanii (d’Orbigny, 1826) in dorsal view (scale equals 200 μm) (6) and in ventral view (scale equals 100 μm) (7). 8, Operculina ammonoides (Gronovius, 1781) in dorsal view (scale equals 1 mm). 9, Operculina bartschi Cushman, 1921 in dorsal view (scale equals 1 mm). 10, Operculina complanata (Defrance, 1822) in dorsal view (scale equals 500 μm). 11, Operculina discoidalis d’Orbigny, 1826 in dorsal view (scale equals 500 μm). 12, Operculina elegans Cushman, 1921 in dorsal view (scale equals 1 mm). 13, Operculina granulosa Leymerie, 1846 in dorsal view (scale equals 500 μm). 14, Operculina hardiei d’Archiac and Haime, 1853 in dorsal view (scale equals 500 μm). 15, Heterostegina depressa d’Orbigny, 1826 in dorsal view (scale equals 300 μm). 16, Planostegina operculinoides (Hofker, 1927) in dorsal view (scale equals 1 mm). 17-19, Pileolina patelliformis (Brady, 1884) in dorsal view (scale equals 200 μm) (17); in lateral view (scale equals 100 μm) (18); and in ventral view (scale equals 100 μm) (19). 20, Planogypsina acervalis (Brady, 1884) in dorsal view (scale equals 500 μm). 21, Sphaerogypsina globulus (Reuss, 1848) in dorsal view (scale equals 300 μm).