Snowy Range Formation
Geology
Members: unnamed (4), ? Dry Creek (1), Dry Creek (2), Sage (6), Sage Limestone (1)
Lithologies: not reported (1), "shale" (2), conglomerate (5), "limestone" (5)
Paleoenvironments: marine indet. (1), carbonate indet. (1), shallow subtidal indet. (5), reef, buildup or bioherm (1), marginal marine indet. (2), lagoonal (2)
Collections
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Wyoming) | (9516) | |
| Franconian | USA (Wyoming) | (9514 9788 9789 9928) | |
| Franconian | USA (Montana) | (242 243 247 249 199765) | |
| Millardan | USA (Montana) | (90644 90672) | |
| Trempealeauan | USA (Wyoming) | (9921) | |
| Trempealeauan | USA (Montana) | (9920) |