• Diplodocimorpha
  • ?Hisanohamasaurus [i. s.]
  • Megacervixosaurus tibetensis [i. s.]
  • Diplodocoidea
    • Dicraeosauridae
      • Amargasaurus cazaui*
      • Amargasaurus groeben
      • Dicraeosaurus hansemanni*
      • Dicraeosaurus sattleri
    • Diplodocidae
      • Dyslocosaurus polyonychius [i. s.]
      • Apatosaurinae
        • Apatosaurus ajax*
        • Apatosaurus excelsus
        • Apatosaurus louisae
        • Eobrontosaurus yahnahpin
      • Diplodocinae
        • Barosaurus africanus
        • Barosaurus lentus*
        • Cetiosauriscus stewarti [i. s.]
        • Diplodocus carnegiei
        • Diplodocus hayi
        • Diplodocus longus*
        • ---
          • Dystylosaurus edwini
          • Seismosaurus hallorum
          • Supersaurus vivianae
  • Rebbachisauridae
    • Rebbachisaurinae
      • Limaysaurus tessonei
      • Rebbachisaurus garasbae

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Revised: January 25, 1999; New: January 1, 1996