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        middle Eocene
        
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    - Lower Cretaceous
      - Albian (1)
      - Clearwater Formation (4)
      - Mannville Group (2)
      - McMurray Formation (4)
      - Pebble Shale (1)
    - Upper Cretaceous
      - Cardium Formation (1)
      - Ferron Sandstone Member (1)
      - Gulfian
        
        Austin Chalk (1)
        
        Eagle Ford Formation (2)
      - Kirtland Shale (1)
      - Pierre Shale (1)
      - Teapot Sandstone Member (1)
      - Tropic Shale (1)
      - Tuscaloosa Formation (2)
      - Wall Creek Member (1)
      - Williams Fork Formation (1)
    - Viking Formation (1)
  - Franciscan Complex (1)
  - Jurassic
    - Kingak Shale (1)
    - Lower Jurassic
      - Toarcian (1)
      - upper Liassic (1)
    - Middle Jurassic
      - Bajocian (1)
      - Callovian (2)
    - Upper Jurassic
      - Cotton Valley Group (2)
      - Haynesville Formation (1)
      - Oxfordian (1)
  - Statfjord Formation (1)
  - Triassic
    - Lower Triassic (1)
    - Montney Formation (1)
    - Sherwood Sandstone (3)
    - Shublik Formation (1)
    - Upper Triassic
      - Mercia Mudstone (1)
  - Vaca Muerta Formation (2)
- Paleozoic
  - Arbuckle Group (1)
  - Berea Sandstone (1)
  - Cambrian
    - Upper Cambrian
      - Mount Simon Sandstone (2)
  - Carboniferous
    - Benxi Formation (1)
    - Mississippian
      - Barnett Shale (11)
      - Charles Formation (1)
      - Upper Mississippian
        
        Fayetteville Formation (1)
        
        Meramecian (1)
    - Namurian (1)
    - Pennsylvanian
      - Mansfield Formation (1)
      - Morrow Formation (1)
      - Pottsville Group (1)
      - Upper Pennsylvanian
        
        Canyon Group (1)
      - Westerly Granite (1)
    - Upper Carboniferous
      - Millstone Grit (1)
      - Westphalian (1)
  - Devonian
    - Middle Devonian
      - Marcellus Shale (7)
    - Old Red Sandstone (1)
    - Upper Devonian
      - Canadaway Group (1)
      - Frasnian (2)
      - Grosmont Formation (1)
  - Exshaw Formation (1)
  - Knox Group (1)
  - Lisburne Group (1)
  - lower Paleozoic (1)
  - Ordovician
    - Lexington Limestone (1)