File:EB1911 Gastropoda - Patella vulgata section and ctenidium.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:51, 27 February 2019 | 617 × 699 (116 KB) | Bob Burkhardt | {{Information |description ={{en|1=A, Section in a plane vertical to the surface of the neck of ''Patella vulgata'' through ''a'', the rudimentary ctenidium (Lankester’s organ), and ''b'', the olfactory epithelium (osphradium); ''c'', the olfactory (osphradial) ganglion. B, Surface view of a rudimentary ctenidium of ''Patella'' excised and viewed as a transparent object.}} |date =published 1911 |source =“Gastropoda,” ''Encyclopædia Britannica'' (11th ed.), v. 11, 1911, p. 5... |
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