Bear Gulch Member
Geology
Group: Big Snowy
Formation: Heath
Lithologies: lime mudstone (1), "limestone" (24)
Paleoenvironments: shallow subtidal indet. (1), open shallow subtidal (5), lagoonal/restricted shallow subtidal (18), estuary/bay (1)
Age range: base of the Arnsbergian to the top of the Early/Lower Campanian or 327.00000 to 70.60000 Ma
Collections
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Chesterian | USA (Montana) | (136169 157238) | |
Serpukhovian | USA (Montana) | (154744) | |
Arnsbergian | USA (Montana) | (90681 116654 116655 116656 116657 116658 116659 116660 116762 116763 116764 130890 227056 226838 227060 227061 227064 227065 227066 232617 232618 232644) | |
Early/Lower Campanian | Canada (Alberta) | (82650 82651 82652 82653 82654) |