| Testudinella patina, dorsoventral view; specimen from (2). |
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| Testudinella patina, dorsoventral view; specimen from (2), foot retracted. |
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| Testudinella patina, crop of the above image: transversely striated retractor muscles. (1) |
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| Testudinella patina, this image of a specimen with head/ corona retracted into the lorica and slightly compressed by coverslide shows the (openings of the) lateral antennas (arrowheads). Also visible are the two red eyespots and the trophi. |
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| Testudinella patina, contracted specimen. (3) |
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| Testudinella patina, foot. Testudinella is the only rotifer genus with cilia on the posterior end of the foot. (4) |
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| Location: Wahner Heide near Cologne, Germany, ditch, (1); Hattingen, Wodantal, pond (2); Water reservoir Heilenbecker Talsperre (3); Hattingen Oberstüter, garden pond (4) |
| Habitat: plankton/ between algae (1;2;3); between algae (4); |
| Date: 02.06.2010 (1); 22.05.2015 (2); 01.03.2012 (3); 21.10. 2012 (4) |
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