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Data Sources
Topo
Ecoregions
Public Lands
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BASEMAPS
Default Weather
Temperature
Smoke
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WEATHER
Cook Mountain Formation (TXEOcm;0)
Geologic Formation
in
TX
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Lithology
Lignite
Lignite
Siltstone
Other
(3,664 mi²)
Geologic Age
Eocene (56 Ma – 33.9 Ma ago)
Geologic Unit Label
EOcm
Cook Mountain Formation
—
USGS
Fossils
Gastropod Fossil
Gastropoda (class),
“Gastropod”
201
Observations
JAN - DEC
Volutidae
FAMILY
131
Observations
JAN - DEC
Bivalve Fossil
Bivalvia (class)
86
Observations
JAN - DEC
Turritella
GENUS
77
Observations
JAN - DEC
Turritellidae
FAMILY
72
Observations
JAN - DEC
See All
Taxonomy
Geographic Places
307
Geological Feature
46
Geologic Formation
Classified As
Geologic Formation
Cook Mountain Formation (TXEOcm;0)
Cook Mountain Formation (TXEOcm;0)
Cook Mountain Formation (TXEOcm;0)
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