Keywords: Origin of Vertebrates Fig 132.png Fig 132 ”A Muco-cartilage of Lower Lip of AmmocĹ“tes Mc ; m ph muscle of lower lip; m sm somatic muscle; Cor laminated layer of skin B Degenerated Muco-cartilage of Branchial Region F fat layer; P pigment; Bl blood-space; N somatic nerve; m br branchial muscle; m sm somatic muscle 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 |