Keywords: Origin of Vertebrates Fig 118.jpg Fig 118 ”Skeleton of Head-Region of AmmocĹ“tes A Lateral View; B Ventral View; C Dorsal View Muco-cartilage red; soft cartilage blue; hard cartilage purple sk<sub>1</sub> sk<sub>2</sub> sk<sub>3</sub> skeletal bars; c e position of pineal eye; na cart nasal cartilage; ped pedicle; cr cranium; nc notochord All references in this work to AmmocĹ“tes or Petromyzon appear to refer to the species now called Lampetra planeri 1908 The Origin of Vertebrates https //archive org/details/ost-biology-the_origin_of_vertebrates Walter Holbrook Gaskell PD-old-auto-1923 1914 Origin of Vertebrates book Lampetra planeri |