There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 286 | J. Sepkoski | Williston Basin, Deadwood Fm., Arenig, zone e Arenig - Ordovician 2 - Montana | Lochman-Balk and Wilson (1967) |
| 69028 | P. Wagner | Shell Oil Co., #32-33B. 10223', #32-33B, N.P. Unit, S.W. Richey field (= Williston Basin, Deadwood Fm., upper Tremadoc, zone d, Montana in Sepkoski 1998) Demingian - Ordovician 1 - Montana | Lochman (1965) |