SEDIS - Thesaurus
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Boggy Shale
BT
Chronostratigraphic Units
.
Phanerozoic
..
Paleozoic
...
Carboniferous
....
Pennsylvanian
.....
Middle Pennsylvanian
......
Desmoinesian
.......
Boggy Shale
RT
Oklahoma
Arkansas
Krebs Group
SN
In Krebs Group. Oklahoma and W Arkansas. Added to Thesaurus in 1985.
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