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Keywords from Image Description:
Origin of Vertebrates Fig . Fig Epithelial Cells of Ammoctes to show the Canaliculi in the Thick Cuticle Transverse Section through the Cuticle All references in this work to Ammoctes or Petromyzon appear to refer to the European Brook Lamprey now called Lampetra planeri The Origin of Vertebrates org Walter Holbrook Gaskell PDoldauto