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A living specimen retracted into its lorica (shell) and an empty lorica. From the Bay of Villefranche. Z-stack of photomicrographs made using a 20x objective and DIC optics.
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Hermann Fol's drawing from the original description (1881) with his corrected dimensions (1884). False brown color added to the ciliate cell
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From the Bay of Villifranche. The large conical things are tintinnids, the smaller round things are dinoflagellates, the thin stick is a diatom.
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Drawing from original description of Rhabdonella spiralis by Eugen Jrgensen in 1924. Dimensions added from the text description.
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Rhabdonella elegans (Jrgensen 1924) from station 58 (in the Mozambique Channel, June 2010) of the Tara Oceans Expedition. Formalin-preserved specimen.