Rosalina sp.

Toefy, R., Gibbons, M. J. & McMillan, I. K., 2005, The foraminifera associated with the alga Gelidium pristoides, South Africa, African Invertebrates 46, pp. 1-26 : 14-16

Rosalina sp. “A”

Fig. 5E

Description: Rounded. No chambers visible on dorsal side, ventral side unknown. Margin rounded but not regular. Finely perforate with depressed areas. Width = 140 µm, height = 145 µm, width:height = 1:1.03.

Material examined: A27413 .

Distribution: Around South Africa from Kommetjie to Victoria Bay.

Remarks: Differs from Rosalina globularis , which has coarse perforations and inflated chambers which give the test a lobate shape. It also has distinct curved radial sutures absent in Rosalina sp. “A”. R. bradyi has flush limbate sutures and dorsal perforations which disappear towards the periphery, differing from Rosalina sp. “A”. R. irregularis has irregular chambers which are longer than wide with each successive whorl. The position of chambers is uncertain because of the lack of distinct sutures. This species could possibly be Glabratellina kermadecensis ( Hayward et al. 1999) as both these species have coarsely perforate test walls which obscure chamber arrangements and sutures.

Figures

Fig. 5 A–L: (A) Trifarina angulosa (Williamson, 1858); (B) Neoconcorbina sp. “A”; (C, D) Rosalina cf. globularis d’Orbigny, 1826; (E) Rosalina sp. “A”; (F–H) Glabratella australensis (Heron-Allen & Earland, 1932); (I, J) Patellina corrugata Williamson, 1858; (K) Ammonia parkinsoniana (d’Orbigny, 1839); (L) Pararotalia nipponica (Asano, 1936).