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| Collotheca libera Zacharias, 1894 |
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Collotheca libera, total view, a species with two conspicuous eyespots in the dorsal lobe. The bell-shaped sheath of this species is very wide. This housing is secreted by the integument.Foot with distal onion-shaped thickening (arrowhead). This specimen has an amictic egg (arrow). |
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| Collotheca libera, same specimen as above; focus plane on the cilia of the dorsal lobe. |
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| Images of specimens (2) courtesy of Dr. Martin Kreutz, realmicrolife. |
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| Location: Rhine, near wastewater treatment plant Wollmatingen/ Konstanz |
| Habitat: plankton |
| Date: 05.08.1998 |
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