stratigraphic intervals
Count: [*†*] 2; †295
   (System) †Jurassic (201.3 - 145.0 Ma)
  Count: [†*] †37
     (Series) †Lower (201.3 - 174.1 Ma)
    Count: [†*] †12
       (Stage) †Pliensbachian (190.8 - 182.7 Ma)
      Count: [†*] †2
         1 (Substage) †margaritatus + spinatum Zones
        Count: -
         2 (Substage) †jamesoni-davoei Zones
        Count: -