#Mononychus_olecranus  75-million-year-old turkey-sized long-legged fossil found in the Gobi Desert of Mongolia having birdlike fused wrist bones and keeled breastbone and a long tail resembling a dinosaur's; short 3-inch-long forelimbs end in a single claw instead of wings; classification as bird or dinosaur is in dispute
  supertype:  maniraptor  advanced carnivorous theropod
  member of:  genus_Mononychus  authorities disagree over whether to classify the genus as bird or dinosaur
     member of:  suborder_Maniraptora__Maniraptora  advanced theropods including oviraptorids and dromaeosaurs and possibly even modern birds
        member of:  suborder_Theropoda__Theropoda  carnivorous saurischian dinosaurs with short forelimbs; Jurassic and Cretaceous
           member of:  suborder_Sauropodomorpha__Sauropodomorpha  gigantic herbivorous dinosaurs having huge bodies with long necks and small heads: Prosauropoda and Sauropoda (apatosaurus; diplodocus; titanosaurs)
              member of:  order_Saurischia__Saurischia  extinct terrestrial reptiles: theropods (carnivorous); sauropods (herbivorous)
                 member of:  subclass_Archosauria__Archosauria  a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
                    member of:  class_Reptilia__Reptilia  class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
                       member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                          member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                             member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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