Category

Upper Cretaceous Series of North America

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Hell Creek Formation

geological formation

Horseshoe Canyon Formation

geological formation in Canada

Two Medicine Formation

geological formation in North America

Cerro del Pueblo Formation

geological formation in Coahuila, Mexico

Frenchman Formation

stratigraphic unit of Late Cretaceous age in Western Canada

Kirtland Formation

geological formation in New Mexico and Colorado, United States

Oldman Formation

geological formation in Canada

Fruitland Formation

geological formation in the United States of America

Kaiparowits Formation

geological formation in the United States

Niobrara Formation

geological formation in the United States of America