File:Origin of Vertebrates Fig 168.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:58, 11 November 2013 | ![]() | 1,671 × 711 (65 KB) | Keith Edkins | == {{int:filedesc}} == {{Information |Description={{En|Fig. 168.—Diagram illustrating the Position of the Pleural Folds and Gonads in Ptychodera (A) and Amphioxus (B) respectively. ''Al.'', alimentary canal; ''D.A.'', dorsal vessel; ''V.A.'', ventr... |
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