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Sabulodinium undulatum Saunders et Dodge 1984
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Dinophysis (die-know-fie-sis), common dinoflagellate in marine water column. This individual is clearly heterotrophic. Differential interference contrast.
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Two cells close to completing division.
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D. acuminata has an oval cell shape. The posterior end of the theca can bear small teeths. The left sulcal list is well developed and of a similar depth along its length. The pore structure is usually finer than in species such as D. norvegica, but is variable.
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It is often confused with D. norvegica. However, the widest part of the cell lies further posteriorly than in D. norvegica, with a blunt antapical tip. Length: 54-94 microns.
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Cell rounded-oval to circular, laterally strongly compressed, length: 36-56mm. The anterior end extends slightly beyond the list bordering the girdle. The theca has a fine pore structure. Chromatophores are absent
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Ornithocercus magnificus.