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Lumbreras, La Rioja, Espaa
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Logrono, La Rioja, Spain
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Cuelgamuros, Madrid, Spain
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Galende, Castille and Leon, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Vallibona, Valencia, Spain
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Galende, Castille and Leon, Spain
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Mohedas de la Jara, Castille la Mancha, Spain
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Left panel: live specimen imaged with DIC optics (image by G.A. Antipa); right panel: protargol-stained specimen (image by D.H. Lynn).
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Ribadelago de Franco, Castilla y Len, Espaa
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Ajamil, La Rioja, Espaa
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Ribadelago, Castille and Leon, Spain
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Pera, Faro, Portugal
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San Martin De Castaneda, Castille and Leon, Spain
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Madrid, Madrid, Spain
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Cabanas De Sayago, Castille and Leon, Spain
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Canencia, Madrid, Spain
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Cabanas De Sayago, Castille and Leon, Spain
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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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Hoyo de Manzanares, Madrid, Spain
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la Parrilla, Madrid, Spain