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
Albian113.0 - 100.5USA (Colorado) (55194 55197 55199 55200 55201 55202 55205 66922)
Albian - Early/Lower Cenomanian113.0 - 93.5USA (Colorado) (66900 66901)
Late/Upper Albian105.3 - 99.6USA (Colorado) (55196 76897 76898 76899)
Late/Upper Albian - Early/Lower Cenomanian105.3 - 93.5USA (Colorado) (60595 61429 61430 96438 96439)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Japan (Wakayama) (233344)