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Authority

Balech (1976: 19, fig. 10)

Class

Dinophyceae

Order

Gymnodiniales

Family

Gymnodiniaceae

Basionym

N/A

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Synonyms

Amphidinium acutissimum auct. non Schiller (1933), sensu Hada (1970: 12, fig. 5)

Additional References

Andreoli et al. (1995: 473)

Description

Cells fusiform, 26–49 µm long, 3–13 µm wide. Epitheca short, ±conical. Hypotheca c. 4 times larger than epitheca, acuminate. Sulcus short and inconspicuous. Chloroplasts numerous, large and ellipsoidal.

Distribution

Terra Nova Bay, Ross Sea (Andreoli et al., 1995); KERFIX, 50°40’S 68°25’E, Southern Ocean (Kopczyńska et al., 1998); Antarctic pack-ice (Garrison, 1991b).

Comments

A small but distinctive species, A. hadai is the only common Amphidinium species in Antarctic waters.

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