| Group or Formation |
Period |
Notes |
| Bad Cache Rapids Group/Portage Chute Formation | Ordovician | |
| Bad Cache Rapids Group/Surprise Creek Formation | Ordovician | |
| Chasm Creek Formation | Ordovician | |
| Churchill River Formation | Ordovician | |
| Churchill River Group/Caution Creek Formation | Ordovician | |
| Churchill River Group/Chasm Creek Formation | Ordovician | |
| Churchill River Group/Red Head Rapids Formation | Ordovician | |
| Colorado Group/Niobrara Formation | Cretaceous | |
| Dawson Bay Formation | Devonian | |
| Elm Point Formation | Devonian | |
| Favel Formation | Cretaceous | |
| Interlake Group/Atikameg Dolomite | Silurian | |
| Interlake Group/Cedar Lake Dolomite | Silurian | |
| Interlake Group/Cross Lake Dolomite | Silurian | |
| Interlake Group/East Arm Dolomite | Silurian | |
| Interlake Group/Fisher Branch Dolomite | Silurian | |
| Interlake Group/Inwood Formation | Silurian | |
| Interlake Group/Moose Lake Dolomite | Silurian | |
| Manitoba Limestone Formation | Devonian | |
| Montana Group/Pierre Shale Formation | Cretaceous | |
| Pierre Formation | Cretaceous | |
| Pierre Shale Formation | Cretaceous | |
| Portage Chute Formation | Ordovician | |
| Red River Formation | Ordovician | |
| Souris River Formation | Devonian | |
| Stonewall Formation | Ordovician | |
| Stony Mountain Formation | Ordovician | |
| Vermilion River Formation | Cretaceous | |
| Winnipegosis Formation | Devonian | |
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