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| Keywords: Origin of Vertebrates Fig 041.png Fig 41 ”Retina and Optic Nerve of Petromyzon After Müller and Langerhans On the left side the Müllerian fibres and pigment-epithelium are represented alone The retina is divided into an epithelial part C the layer of visual rod-cells 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 int limiting membrane; 2 int molecular layer with its two layers of cells; 3 layer of optic nerve fibres; 4 int nuclear layer; 5 double row of tangential fulcrum cells; 6 layer of terminal retinal fibres; 7 ext nuclear layer; 8 ext limiting membrane; 9 layer of rods; 10 layer of pigment-epithelium D axial cell layer Axenstrang in optic nerve The layer 6 is drawn rather too thick All references in this work to AmmocÅ“tes or Petromyzon appear to refer to the species now called Lampetra planeri 1908 The Origin of Vertebrates https //archive org/details/originofvertebra1908gask Walter Holbrook Gaskell PD-old-auto-1923 1914 Origin of Vertebrates book Lampetra planeri Retina Nervus opticus | ||||
