American brook lamprey  (Lethenteron appendix)

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Taxonomy of Fishes

• Osteichthyes - Bony fishes->
• Chondrichthyes - Cartilaginous fishes->
• Agnatha - Jawless fishes->

  • Myxini - Hagfishes->
  • Petromyzonti - Lampreys->

    • Petromyzontiformes - Lampreys->

      • Petromyzontidae - Lampreys->

        • Eudontomyzon - Eudontomyzon->
        • Lampetra - Lampetra->
        • Petromyzon - Petromyzon->
        • Caspiomyzon - Caspiomyzon->
        • Entosphenus - Entosphenus->
        • Ichthyomyzon - Ichthyomyzon->
        • Lethenteron - Lethenteron->

          • Alaskan brook lamprey (Lethenteron alaskense)
          • American brook lamprey (Lethenteron appendix)
          • Arctic lamprey (Lethenteron camtschaticum)
          • Siberian brook lamprey (Lethenteron kessleri)
          • Lethenteron mitsukurii (Lethenteron mitsukurii)
          • Western Transcaucasian lamprey (Lethenteron ninae)
          • Far Eastern brook lamprey (Lethenteron reissneri)
        • Tetrapleurodon - Tetrapleurodon->
      • Geotriidae - Southern lampreys->
      • Mordaciidae - Southern topeyed lampreys->