Keywords: Origin of Vertebrates Fig 045.png Fig 45 ”Section through one of the two Anterior Diverticula of the Gut in Artemia and the Retinal Ganglion The section is through the extreme anterior end of the diverticulum thus cutting through many of the columnar cells at right angles to their axis Al gut diverticulum; rt gl retinal ganglion 1908 The Origin of Vertebrates https //archive org/details/originofvertebra1908gask Walter Holbrook Gaskell PD-old-auto-1923 1914 Origin of Vertebrates book Anatomy of the eyes of animals Artemia |