Keywords: Origin of Vertebrates Fig 042.png Fig 42 ”Ideal Diagram of the Layers in a Crustacean Eye The retina is divided into an epithelial part C the layer of retinular cells and rhabdomes and a neurodermal or cerebral part which is formed of A the ganglion of the optic nerve and B the ganglion of the retina 1 optic nerve fibres which cross at their entrance into the retina; 2 int molecular layer with its two rows of cells; 3 int nuclear layer; 4 Reichenbach's double row of large lightly-staining cells; 5 layer of terminal retinal fibres; 6 ext nuclear layer; 7 ext limiting membrane; 8 layer of crystalline cones; 9 cornea 1908 The Origin of Vertebrates https //archive org/details/originofvertebra1908gask Walter Holbrook Gaskell PD-old-auto-1923 1914 Origin of Vertebrates book Crustacean eyes Retina |