Keywords: Origin of Vertebrates Fig 154.png Fig 154 ”Transverse Section through Auditory Capsules and Brain of AmmocĹ“tes Au auditory organ; VIII auditory nerve; gl ganglion cells of VIIIth nerve; Au cart cartilaginous auditory capsule; gen cells of old generative tissue round brain and in auditory capsule; bl blood-vessels All references in this work to AmmocĹ“tes or Petromyzon appear to refer to the European Brook Lamprey 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 |