Coal Ridge Member
Geology
Group: Montana
Formation: Judith River
Lithologies: not reported (9), mudstone (1), siltstone (1), sandstone (1)
Paleoenvironments: terrestrial indet. (11), crevasse splay (1)
Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Campanian | USA (Montana) | (14447 55274 156538 190394 230098 230102 231025) | |
Middle Campanian - Late/Upper Campanian | Canada (Saskatchewan) | (14493 14494) | |
Middle Campanian - Late/Upper Campanian | USA (Montana) | (46123 46124 206062) |