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Ceratium fusus.
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Exuviaella lima.
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First depiction of the dinoflagellate now know as Ceratium fusus by Christian Ehrenberg in 1834 as Peridinium fusus.
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Histioneis elongata from the South Pacific, Tara Oceans Expedition station 111. Lugol's-fixed specimen, z-stack of images made using a 40x objective & DIC optics.
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Ceratium furca from the Bay of Villefranche. Living cell, note that the trailing flagella was rotating.
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From the original species description: Figure 4 from plate 23 of Stein, F.R. (1883) Der Organismus der Arthrodelen Flagellaten. II. Hlfte. 30 pp & plates.
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First described by Paul Gourret in 1883 as Ceratium fusus, var. extensum. now known as Ceratium extensum or Neoceratium extensum
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Dinoflagellate from the Ionian Sea in September 2010. Found in a sample from 74m depth.
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From the Bay of Villefranche in December 2013
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First depiction of Ceratium furca was by Christian Ehrenberg in 1834 as Perdinium furca. Note the drawing of a rotating flagella.
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Ornithocercus magnificus from the Bay of Villefranche on Feb 18th 2014. The little orange balls are symbiotic cyanobacteria. Lugol's-fixed specimen, Z-stack of images made using a 40x objective and DIC optics.
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Ceratium extensum (or Neoceratium extensum), the longest Ceratium species. Specimen from the Bay of Villefranche.
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Specimen from the Ionian Sea found at 75 m depth. Lugol's-fixed.
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He thought it splendid. Figures from the original description of Ornitheroceras splendidus by Franz Schütt in 1893. The paper is available on the Classic Taxonomic Monographs page.
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Histioneis hyalina (probably). From Station 52 of the Tara Oceans Expedition
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Oxytoxum nanum
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This specimen of Ceratium had a snack shown by the organge fluorescence of cryptophyte pigment- perhaps that of the ciliate Mesodinium rubrum
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Ornithorcercus heteroporus (probably) from Station 72 of the Tara Oceans Expedition.
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A heterotrophic dinoflagelate from the Amundsen Sea