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| Brachionus quadridentatus var. cluniorbicularis Skorikov, 1894 |
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| Brachionus quadridentatus var. cluniorbicularis, dorsalventral view; whirling. |
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| Brachionus quadridentatus var. cluniorbicularis, lorica of a dead specimen showing the 6 dents at the dorsal anterior side. In contrast to B. quadridentatus quadridentatus the posterior part of the lorica is rounded. |
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| Location: Zuiderlaan, Hollum, Ameland, NL; pond |
| Habitat: plankton |
| Date: 13.10.2016 |
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