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.