| Keratella serrulata; focal plane on the ventral side of the lorica showing the granulated surface. (2) |
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| Keratella serrulata; another specimen from (1) |
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| Keratella serrulata; another specimen from (1), focal plane on the dorsal sideof the lorica. |
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| Keratella serrulata; small dents on the anterior margin of the ventral plate of the lorica (1) |
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| Keratella serrulata; specimen with a resting egg. This type of egg is produced when the environment conditions get worse. The restings can survive bad conditions, eg. winter time. The lorica of this specimen is covered with filamentous bacteria. |
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| Location: Nord-Sued-Kanal / Twist/ Germany (1) Nature reserve Heiliges Meer (2) |
| Habitat: Plankton |
| Datum: 1.5.2009 (1); 16.4.2011(2) |
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