Nonion fabum (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 : 27-28

Nonion fabum (Fichtel and Moll, 1798)

Figure 6.20

1798 Nautilus faba Fichtel and Moll , p. 103, pl. 19, figs. a-c.

2010 Nonion fabum (Fichtel and Moll) ; Margreth, p. 123, pl. 36, fig. 2a-c.

2012 Nonion fabum (Fichtel and Moll) ; Milker and Schmiedl, p. 112, fig. 25.22-24.

2014 Nonion fabum (Fichtel and Moll) ; Panchang and Nigam, pl. 33, fig. 11a-b.

Description. Test ovate, compressed, wall calcareous, perforate, surface smooth, umbilici slightly depressed, ornamented with pustules; chambers many, inflated, planispirally arranged with rapid increase in size, coiling involute; periphery broadly rounded, sutures thick and curved backwards; aperture an interiomarginal slit-like opening.

Figures

FIGURE 6. 1-2, Calcarina spengleri (Gmelin, 1791) in dorsal view (scale equals 500 μm) (1) and in ventral view (scale equals 500 μm) (2). 3, Cribroelphidium excavatum (Terquem, 1875) in ventral view (scale equals 100 μm). 4, Cribroelphidium poeyanum (d’Orbigny, 1826) in dorsal view (scale equals 100 μm). 5, Elphidiella hannai (Cushman and Grant, 1927) in ventral view (scale equals 200 μm). 6, Elphidium advenum subsp. limbatum (Chapman, 1907) in dorsal view (scale equals 200 μm). 7, Elphidium advenum var. depressulum Cushman, 1933 in ventral view (scale equals 200 μm). 8, Elphidium asiaticum Polski, 1959 in ventral view (scale equals 100 μm). 9, Elphidium botaniense Albani, 1981 in ventral view (scale equals 200 μm). 10, Elphidium carteri Hayward in Hayward, Hollis and Grenfell, 1997 in dorsal view (scale equals 100 μm). 11, Elphidium charlottense (Vella, 1957) in dorsal view (scale equals 200 μm). 12, Elphidium charlottense (Vella, 1957) in apertural view (scale equals 200 μm). 13, Elphidium craticulatum (Fichtel and Moll, 1798) in dorsal view (scale equals 400 μm). 14, Elphidium crispum (Linnaeus, 1758) in dorsal view (scale equals 300 μm). 15-16, Elphidium hispidulum Cushman, 1936 in apertural view (scale equals 300 μm) (15) and in dorsal view (scale equals 300 μm) (16). 17, Elphidium macellum (Fichtel and Moll, 1798) in dorsal view (scale equals 300 μm). 18, Elphidium somaense Takayanagi, 1955 in ventral view (scale equals 200 μm). 19, Elphidium striatopunctatum (Fichtel and Moll, 1798) in dorsal view (scale equals 400 μm). 20, Nonion fabum (Fichtel and Moll, 1798) in dorsal view (scale equals 200 μm).