Thalassiosira oliveriana (O’ Meara) Makarova et Nikolajev (Figure 7)

Literature: (Scott and Thomas 2005, p. 99, figs. 2.57a–b).

Description: Diameter 48–55 µm.

Remarks: Marginal processes are difficult to resolve under LM but the irregular to radial arrangement of areole is distinct and the thickened marginal valve band is very clear. Ecology and distribution: A marine species only found in Southern seas and Antarctica (Scott and Thomas 2005). Rare in Potter Cove.