Hell Creek
735 occ.
83 taxa (22 genera)
1 countries
Description
The Hell Creek Formation is an intensively studied division of mostly Upper Cretaceous and some lower Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana. The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming. In Montana, the Hell Creek Formation overlies the Fox Hills Formation. The site of Pompeys Pillar National Monument is a small isolated section of the Hell Creek Formation. In 1966, the Hell Creek Fossil Area was designated as a National Natural Landmark by the National Park Service.
Genera
22 genera
News 1
Temporal range
252
201
145
66
0 Ma
Geological group / Member
Montana
138
Montana / Upper
84
Montana / Lower
9
Montana / Pretty Butte
6
Montana / Little Beaver Creek
5
Upper
2
Breien
1
Top countries
🇺🇸 United States
735
Depositional environments
Terrestrial indet.
318
Channel
100
Coarse channel fill
78
Crevasse splay
68
Channel lag
58
Floodplain
52
Fluvial indet.
41
Fine channel fill
13
Small lake
3
Pond
2
Top collectors
M. Licking
25
W
25
Stein
25
B. Brown
19
H. Garbani
12
J. Hoganson
10
W. Stein
10
C. West
8
Univ. of Minnesota
8
P. Kaisen
6
B. Marty
6
P. Larson
6
Collection activity by decade
1880s
2
1890s
4
1900s
36
1920s
1
1930s
3
1940s
3
1950s
1
1960s
35
1970s
32
1980s
60
1990s
28
2000s
81
2010s
21