Keywords: Origin of Vertebrates Fig 065.png Fig 65 ”Section through Branchial Appendage of AmmocĹ“tes br cart branchial cartilage; v br branchial vein; a br branchial artery; b s blood-spaces; p pigment; S sense-organ; c ciliated band; E I external and internal borders; m add adductor muscle; m c s striated constrictor muscle; m c t tubular constrictor muscle; m and m v muscles of valve 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 |