Earth:Marias River Shale

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Marias River Shale
Stratigraphic range: Cretaceous
TypeFormation
Location
RegionMontana
CountryUnited States

The Marias River Shale is a geologic formation in Montana. It preserves fossils dating back to the Cretaceous period.

See also

  • List of fossiliferous stratigraphic units in Montana
  • Paleontology in Montana

References