Upper Ordovician
preferred label: اردویسین فوقانی @fa
type: Concept
narrower: Red River Formation

South Dakota
preferred label: داکوتای جنوبی @fa
type: Concept
related: Red River Formation

Red River Formation
preferred label: سازند رود سرخ @fa
type: Concept
related: Manitoba
related: Bighorn Dolomite
related: Wyoming
related: North Dakota
related: Montana
related: South Dakota
broader: Upper Ordovician

Wyoming
preferred label: ویومینگ @fa
type: Concept
related: Red River Formation

Manitoba
preferred label: مانیتوبا @fa
type: Concept
related: Red River Formation

Bighorn Dolomite
preferred label: دولومیت بیگورن @fa
type: Concept
related: Red River Formation

Montana
preferred label: مونتانا @fa
type: Concept
related: Red River Formation

North Dakota
preferred label: داکوتای شمالی @fa
type: Concept
related: Red River Formation