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minerals
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Primary terms
- absolute age (150)
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- carbon
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- Cenozoic
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    - Neogene
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        Columbia River Basalt Group (2)
        
        lower Miocene (8)
        
        middle Miocene (4)
        
        Peach Springs Tuff (9)
        
        upper Miocene (11)
      - Pliocene
        
        Gauss Chron (1)
        
        lower Pliocene (4)
        
        middle Pliocene (1)
        
        upper Pliocene (4)
    - Paleogene
      - Claron Formation (1)
      - Eocene
        
        Baca Formation (1)
        
        Colton Formation (1)
        
        lower Eocene (2)
      - lower Paleogene (1)
      - Oligocene
        
        Fish Canyon Tuff (1)
        
        lower Oligocene (1)
      - Paleocene
        
        lower Paleocene
        
        K-T boundary (3)
      - Sespe Formation (2)
      - Wasatch Formation (1)
  - upper Cenozoic (5)
  - Verde Formation (1)
- Central America
  - Guatemala (1)
  - Nicaragua (1)
- chemical analysis (7)
- Chordata
  - Vertebrata
    - Pisces
      - Chondrichthyes
        
        Elasmobranchii
        
        Selachii (1)
        
        Euselachii (1)
      - Osteichthyes
        
        Actinopterygii
        
        Teleostei
        
        Cypriniformes
        
        Cyprinidae (1)
      - Placodermi (1)
    - Tetrapoda
      - Amniota (1)
      - Amphibia
        
        Labyrinthodontia
        
        Temnospondyli (1)
        
        Lepospondyli (2)
      - Mammalia
        
        Theria
        
        Eutheria
        
        Artiodactyla (1)
        
        Chiroptera (1)
        
        Edentata (2)
        
        Insectivora (1)
        
        Lagomorpha
        
        Leporidae (1)
        
        Perissodactyla
        
        Hippomorpha
        
        Equidae
        
        Equus (1)
        
        Proboscidea
        
        Elephantoidea