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Temperature
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WEATHER
Hell Creek Formation (NDKh;0)
Geologic Formation
in
MT
,
ND
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Lithology
Claystone
Sandstone
Siltstone
Other
(14,996 mi²)
Geologic Age
Late Cretaceous (100.5 Ma – 66 Ma ago)
Geologic Unit Label
Kh
Gray sand, silt, clay, and sandstone; river sediment; as thick as 150 metres (500 feet).
—
USGS
Fossils
Magnoliopsida
CLASS
514
Observations
JAN - DEC
Tracheophyta
PHYLUM
324
Observations
JAN - DEC
Plant Fossil
Plantae (kingdom),
“Plants”, “Green Plants”, “Green Plant”, “Planta”
190
Occurrences
JAN - DEC
Cottonwood Fossil
Populus (genus)
152
Observations
JAN - DEC
Dryophyllum
GENUS
78
Observations
JAN - DEC
See All
Taxonomy
Geographic Places
307
Geological Feature
46
Geologic Formation
Classified As
Geologic Formation
Hell Creek Formation (NDKh;0)
Hell Creek Formation (NDKh;0)
Hell Creek Formation (NDKh;0)
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