Sphaeroidinella dehiscens (Parker & Jones, 1865)

Ovechkina, Maria N., Bylinskaya, Marina E. & Uken, Ron, 2010, Planktonic foraminiferal assemblage in surface sediments from the Thukela Shelf, South Africa, African Invertebrates 51 (2), pp. 231-231 : 248

Sphaeroidinella dehiscens (Parker & Jones, 1865)

Figs 9F, 9G

Sphaeroidinella bulloides d’Orbigny var. dehiscens: Parker & Jones 1865: 369 , pl. 19, figs 5a–b.

Sphaeroidina dehiscens Parker & Jones : Brady 1884 (part): 621, pl. 84, figs 9–11 (not fig. 8).

Sphaeroidinella dehiscens (Parker & Jones) : Cushman 1927a, 90, pl. 19, fig. 2; Parker 1962: 234, pl. 5,

figs 1, 2; Todd 1965: 67–68, pl. 26, figs 5, 6; Saito et al. 1981: 72, 74, pl. 20, figs 2a–d; Bolli &

Saunders 1985: 244, figs 39.1–8; Basov & Krasheninnikov 1995: pl. V, figs 11, 12; Bylinskaya et al. 2002: 137, pl. IV, fig. 10.

Remarks: This species demonstrates a very wide variation in the size and shape of the test, and in the development of apertures.

Distribution: Equatorial to tropical waters, warm-water species. We found three specimens in our material.

Figures

Fig. 9. (A, B) Globigerinoides ruber (d’Orbigny, 1839), sample 22; (C) G. ruber, sample TB34; (D, E) G. ruber (aberrant form),sample 8; (F, G) Sphaeroidinella dehiscens (Parker &Jones,1865), sample 30; (H) Orbulina universa (d’Orbigny, 1839), sample C.