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Data Sources
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BASEMAPS
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Temperature
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WEATHER
Morrison Formation
Geologic Formation
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Lithology
Sandstone
Conglomerate
Claystone
Other
(23,303 mi²)
Geologic Age
Late Jurassic (164.5 Ma – 145 Ma ago)
(4,145 mi²)
Late Jurassic – Early Cretaceous (164.5 Ma – 100.5 Ma ago)
(1,167 mi²)
Middle Jurassic – Early Cretaceous (175.1 Ma – 100.5 Ma ago)
(475 mi²)
Other
(2,168 mi²)
Geologic Unit Label
J2
(1,760 mi²)
KJ
(1,167 mi²)
Jm
(1,444 mi²)
Other
(3,585 mi²)
Fossils
Verneuilinoides
GENUS
598
Observations
Rzehakinidae
FAMILY
309
Observations
Chordate Fossil
Chordata (phylum),
“Chordates”
125
Observations
Lituolidae
FAMILY
67
Observations
Ammobaculites
GENUS
66
Observations
See All
Taxonomy
Geographic Places
307
Geological Feature
46
Geologic Formation
Classified As
Geologic Formation
Morrison Formation
Morrison Formation
Morrison Formation
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