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Authority

(Freng. & Orlando) O.G.Kozlova (1962: 8, pl. 2, fig. 4)

Class

Diatomophyceae

Order

Centrales

Family

Thalassiosiraceae

Synonyms

N/A

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Basionym

Coscinodiscus margaritae Freng. & Orlando (Frenguelli & Orlando, 1958: 124, pl. 12, figs 6, 7)

Additional References

Jousé et al. (1962: 69, pl. 5, fig. 13)

Description

Cells with circular valves, 24–27 µm diameter. Areolation coarse, radial; areolae 8–9 in 10 µm. Central area of valve with small scattered granules partly dispersed among nearby areolae. Valve with broad radially striated margin; striae 12–14 in 10 µm.

Distribution

Type locality, Scotia Bay, Laurie I., South Orkney Is., “Series 31 and 32” (Frenguelli & Orlando, 1958); Indian Ocean sector of the Antarctic (Kozlova, 1962; Jousé et al., 1962).

Comments

This uncommon species has been rarely reported in recent times.

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