There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 414 | J. Sepkoski | Amerada, Herman-May No.1 Fryburg Area 13,231'-13,235' ft Stairsian - Ordovician 1 - North Dakota | Lochman (1966) |
| 69036 | P. Wagner | 13293', Amerada Petrol. Corp, Herman May, Fryburg Area (= Williston Basin, Deadwood Fm., upper Tremadoc, zone d, Montana in Sepkoski 1998) Demingian - Ordovician 1 - North Dakota | Lochman (1965) |
| 69041 | P. Wagner | 13299', Amerada Petrol. Corp, Herman May, Fryburg Area (= Williston Basin, Deadwood Fm., upper Tremadoc, zone d, Montana in Sepkoski 1998) Demingian - Ordovician 1 - North Dakota | Lochman (1965) |
| 119477 | P. Wagner | Amerada, Herman-May No.1 Fryburg Area 13,237' ft Stairsian - Ordovician 1 - North Dakota | Lochman (1966) |