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Keywords from Image Description:
Origin of Vertebrates Fig . Fig Comparison of Invertebrate Brains from Branchipus to Ammoctes All references in this work to Ammoctes or Petromyzon appear to refer to the species now called Lampetra planeri The Origin of Vertebrates org Walter Holbrook Gaskell PDoldauto Origin of Vertebrates book Branchipus Astacus Limulus polyphemus