Globigerina quinqueloba Natland, 1938

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 : 240

Globigerina quinqueloba Natland, 1938

Figs 5C, 5F

Globigerina quinqueloba: Natland 1938: 149 , pl. 6, fig. 7; Parker 1962: 225–226, pl. 2, figs 7–16; Pflaumann

& Krasheninnikov 1978: 888, pl. 2, figs 10–12; Saito et al. 1981: 48, pl. 10, figs 1, 2; Bylinskaya et al. 2002: 127, pl. II, figs 9–11.

Small, low trochospiral test, with 5 subglobular chambers, slightly flattened radially, in the final whorl. The last chamber is elongated and can partially cover the umbilicus like a bulla. Aperture umbilical, interiomarginal with rim-like basal lip.

Remarks: G. quinqueloba differs from other Globigerina species encountered in having five subglobular chambers, slightly flattened radially, in the final whorl.

Distribution: Temperate, subarctic and subantarctic. This species is an indicator of cold-water conditions ( Bé & Hutson 1977; Bylinskaya et al. 2002). A single specimen was found in our material.

Figures

Fig.5.(A, D) Pulleniatina obliquiloculata (Parker & Jones, 1865), sample 26; (B, E) Globigerinitaglutinata (Egger, 1893), sample 26; (C, F) Globigerina quinqueloba Natland, 1938, sample 2; (G–I) Globigerina bulloides d’Orbigny, 1826, sample 6.