Muddy Sandstone Formation
Geology
Group: Dakota
Members: unnamed (19)
Lithologies: not reported (5), "siliciclastic" (1), "shale" (7), siltstone (1), sandstone (12)
Paleoenvironments: marine indet. (1), terrestrial indet. (5), coastal indet. (8), estuary/bay (2), levee (3), mire/swamp (1)
Age range: base of the Late/Upper Albian to the top of the Early/Lower Maastrichtian or 105.30000 to 66.00000 Ma
Collections
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Albian | USA (Colorado) | (55194 55197 55199 55200 55201 55202 55205 66922) | |
Albian - Early/Lower Cenomanian | USA (Colorado) | (66900 66901) | |
Late/Upper Albian | USA (Colorado) | (55196 76897 76898 76899) | |
Late/Upper Albian - Early/Lower Cenomanian | USA (Colorado) | (60595 61429 61430 96438 96439) | |
Late/Upper Campanian - Early/Lower Maastrichtian | Japan (Wakayama) | (233344) |