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      - Horseshoe Canyon Formation (1)
      - K-T boundary (1)
      - Maestrichtian
        
        upper Maestrichtian (1)
      - Oldman Formation (1)
      - Santonian (1)
      - Senonian (4)
      - Two Medicine Formation (1)
  - Jurassic
    - Ferrar Group (1)
    - Lower Jurassic
      - middle Liassic (1)
      - Pliensbachian (1)
      - Toarcian (2)
    - Middle Jurassic
      - Aalenian (2)
      - Bajocian (1)
      - Bathonian (2)
      - Callovian (4)
    - Oxford Clay (1)
    - Upper Jurassic
      - Hanifa Formation (1)
      - Kimmeridgian (2)
      - Oxfordian (3)
      - Portlandian (2)
      - Tithonian (3)
  - Serra Geral Formation (1)
  - Triassic
    - Lower Triassic
      - Olenekian (1)
    - Middle Triassic
      - Anisian (2)
      - Ladinian (1)
    - Upper Triassic
      - Chinle Formation (1)
      - Mercia Mudstone (1)
      - Norian (1)
      - Rhaetian (1)
      - Yanchang Formation (1)
  - Yanshanian (1)
- MIS 7 (1)
- Paleozoic
  - Cambrian
    - Acadian (1)
    - Kanmantoo Group (1)
    - Lower Cambrian (3)
    - Middle Cambrian (2)
    - Upper Cambrian
      - Furongian (1)
  - Carboniferous
    - Lower Carboniferous
      - Dinantian (2)
    - Mississippian
      - Lower Mississippian (1)
    - Pennsylvanian
      - Middle Pennsylvanian
        
        Moscovian (1)
    - Upper Carboniferous (2)
  - Devonian
    - Lower Devonian (1)
    - Old Red Sandstone (2)
    - Upper Devonian
      - Frasnian (1)
  - lower Paleozoic (5)
  - Ordovician
    - Lower Ordovician (2)
    - Middle Ordovician
      - Llandeilian (1)
    - Skiddaw Slates (1)
    - Upper Ordovician
      - Ashgillian (1)
      - Caradocian
        
        Borrowdale Volcanic Group (1)
  - Permian
    - Lower Permian
      - Al Khlata Formation (1)
      - Cisuralian
        
        Asselian (1)
      - Leman Sandstone Formation (1)
    - Middle Permian (1)
    - Rotliegendes (2)
    - Unayzah Formation (1)
    - Upper Permian
      - Zechstein (3)
  - Silurian
    - Lower Silurian
      - Llandovery (2)
      - Qalibah Formation (1)
      - Wenlock (1)
  - upper Paleozoic
    - Dwyka Formation (2)
- Phanerozoic (13)
- Precambrian
  - Archean
    - Eoarchean (1)
    - Mesoarchean (1)
    - Neoarchean (1)
  - Chuar Group (2)
  - Hecla Hoek Formation (1)
  - Onverwacht Group (1)
  - Stillwater Complex (1)
  - upper Precambrian
    - Proterozoic