Lagenosolenia 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 : 7

Lagenosolenia sp. “A”

Figs 3E, 3F

Description: Elongated ovate shape with definite neck region. Unilocular.Wall calcareous and hyalinated, central region perforate, pores quite large. Double keeled margin. Aperture covered by laterally flaring lip. Width = 128.5 µm, height = 275 µm, width:height = 0.47:1.

Material examined: A27399 , A27400.

Distribution: Around South Africa from Buffels Bay to Victoria Bay.

Remarks: Only two species were found that were similar in structure to Lagenosolenia sp. “A”, L. falcouncinata Albani & Yassini, 1989 and L. largicosta Albani & Yassini, 1989 . Both have a neck, which terminates in laterally flaring lips and both have raised margins or keels. However, L. falcouncinata has a smooth central region, unlike Lagenosolenia sp. “A” which has large perforations in the central region. L. largicosta has large central pores; however it has a wide rough margin, which extends into a thin keel. Both these species have a distinctive neck region, which is absent in Lagenosolenia sp. “A”. The species recovered here is therefore very different to similar species examined.

Figures

Fig. 3 A–L: (A, B) Lagena semilineata Wright, 1886; (C) Lagena sulcata Walker & Jacob, 1798; (D) Lagena tenuis (Bornemann, 1855); (E, F) Lagenosolenia sp. “A”; (G–I) Oolina sp. “A”; (J) Oolina melo d’Orbigny, 1839; (K) Oolina squamosulcata (Heron-Allen & Earland, 1922); (L) Fissurina marginata (Montagu, 1803).