ABCDEFGHIJKLMNOPQRSTUVWXYZ

Authority

H.A.Thomsen, K.R.Buck, P.A.Bolt & D.L.Garrison (1991c: 1069, fig. 5)

Class

Subphylum Heterokonta, Genera Incertae Sedis

Order

N/A

Family

N/A

Additional References

Garrison & Buck (1991: 166), Daugbjerg & Vørs (1992: 35, figs 17.2–17.4, 19.4–19.9)

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Basionym

N/A

Synonyms

N/A

Description

Cells elliptical, dorsoventrally flattened, 12–32 µm long, 7–23 µm diameter, c. 5 µm wide, biflagellate, with a characteristic anterior papilla and a longitudinal furrow (cytosome) along one narrow side of cell. Flagella ±equal and usually equal in length to the cell body, arising from the base of the papilla.

Distribution

In sea-ice, near Davis Station, East Antarctica; McMurdo Sound (Stoecker et al., 1993); type locality, Weddell Sea (Thomsen et al., 1991c).

Comments

The papilla, the anteriorly positioned nucleus with a conspicuous nucleolus and condensed chromatin, and food vacuoles or lipid droplets are readily observed by LM (Thomsen et al., 1991c).

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