Cancris auriculus (Fichtel and Moll, 1798)

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 : 30

Cancris auriculus (Fichtel and Moll, 1798)

Figure 8.3-4

1798 Nautilus auricula Fichtel and Moll , p. 108, pl. 20, figs. a-c.

2001 Cancris auriculus (Fichtel and Moll) ; Szarek, p. 132, pl. 19, figs. 1-3.

2003 Cancris auricula (Fichtel and Moll) ; Murray, p. 19, fig. 6.6-7.

2010 Cancris auriculus (Fichtel and Moll) ; Margreth, p. 28, pl. 29, fig. 10a-c.

2012 Cancris auriculus (Fichtel and Moll) ; Debenay, p. 189.

2012 Cancris auriculus (Fichtel and Moll) ; Milker and Schmiedl, p. 93, fig. 21.14-15.

2014 Cancris auriculus (Fichtel and Moll) ; Panchang and Nigam, pl. 28, fig. 27a-c.

Description. Test biconvex, outline auriculate, cross section lenticular, wall calcareous, perforate, umbilical area imperforate; surface smooth; chambers rapidly increasing in size, trochospirally arranged, coiling evolute on the spiral side, involute on the umbilical side; peripheral margin carinate and acute, sutures curved and slightly depressed on the spiral side, radial and much depressed on the umbilical side; aperture an interiomarginal, umbilical, slit-like opening with a broad apertural flap.

Figures

FIGURE 8. 1-2, Baggina indica (Cushman, 1921) in dorsal view (scale equals 200 μm) (1) and in ventral view (scale equals 300 μm) (2). 3-4, Cancris auriculus (Fichtel and Moll, 1798) in dorsal view (scale equals 400 μm) (3) and in ventral view (scale equals 400 μm) (4). 5-6, Cancris bubnanensis (McCulloch, 1977) in dorsal view (scale equals 300 μm) (5) and in ventral view (scale equals 300 μm) (6). 7-8, Cancris carinata (Millet, 1904) in dorsal view (scale equals 300μm) (7) and in ventral view (scale equals 400 μm) (8). 9-10, Cancris communis Cushman and Todd, 1942 in dorsal view (scale equals 300 μm) (9) and in ventral view (scale equals 300 μm) (10). 11-12, Cancris sagra (d’Orbigny, 1839a) in dorsal view (scale equals 200 μm) (11) and in ventral view (scale equals 200 μm) (12). 13-15, Neoeponides margaritifer (Brady, 1881) in dorsal view (scale equals 500 μm) (13); in ventral view (scale equals 400 μm) (14); and in apertural view (scale equals 500 μm) (15). 16-17, Eponides cribrorepandus (Asano and Uchio, 1951) in dorsal view (scale equals 300 μm) (16) and in ventral view (scale equals 300 μm) (17). 18-19, Eponides repandus (Fichtel and Moll, 1798) in dorsal view (scale equals 300 μm) (18) and in ventral view (scale equals 300 μm) (19). 20, Rosalina macropora (Hofker, 1951) in dorsal view (scale equals 200 μm).