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| Keratella cochlearis var. irregularis Lauterborn 1900 |
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| Keratella cochlearis var. irregularis; dorsal view, focus plane on the asymmetrical (hence the name) pattern of the dorsal lorica. |
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| Keratella cochlearis var. irregularis, specimen with amictic egg; lateral view. |
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| Keratella cochlearis var. irregularis, another specimen from (2) |
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| Keratella cochlearis var. irregularis, lorica of a macerated specimen (2) |
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| Keratella cochlearis var. irregularis, specimen from (3) |
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| Location: Nature reserve Hollum, Ameland, Netherlands, lake(1); Hattingen Felderbachtal, pond (2); nature reserve NSG Unteres Odertal, MV, Germany, Eisvogel-Brücke (3) |
| Habitat: Plankton (1,2); on artificially exposed micro-slides (3) |
| Date: 16.10.2015 (1); 13.05.2017 (2); 28.05.2022 (3) |
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