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Dimensions of the most common Ptychocylis species based on the text of the original species descriptions. The length (black arrow) is the middle of the range given in Brandt 1896, Brandt 1906-1907. The grey arrow is the lorica oral diameter based on the total length (not given in the text of the discriptions). Brandt, rather than Claparède & Laachmann, is used for P. urnula because they did not state exactly what 'diameter' was.
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The defiant diatom is probably Biddulphia (according to Anne Thessen) and the tintinnid is Ptychocylis obtusa/urnula. From a sample taken in the Canada Basin in August 2013 by Eun Jin Yang.
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Specimen from the Bay of Vilefranche in Oct 2010, Lugol's-fixed. Images taken with a 20x objective & complied with Helico Focus
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Specimen from the Bay of Vilefranche in Jan 2011, Lugol's-fixed
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This might be a morph of Eutintinnus tubulosus. Imaged using a 40x objective, sample from the Etang de Thau (Sète, France) in May 2012, lugol's-fixed.
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Eutintinnus sp. These very small Eutintinnus specimens are from the Ganges River estuary.
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Dinoflagellate from the Aegean Sea. Lugol's-fixed specimen from 75 m depth.
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These tintinnid ciliates made unfortunate dietary choices having ingested a parasite. Likely among the first photos published of a parasitic dinoflagellate. Images are from Jean Cachon's 1964 monograph.
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Tintinnopsis radix from Pt B in the Bay of Villefranche. Specimen collected July 8 2013 and fixed with Lugol's; Z-stack of images made using a 20x objective and DIC optics.
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Lugol's-fixed specimen from the Bay of Vilefranche in Sept 2010. Images taken using a 20x objective and compiled with Helico Focus
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Lugol's-fixed specimen from the bay of Villefranche in Jan 2011.
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Lugol's-fixed specimen from the Bay of Villefranche in Jan 2011.