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@county
Cambrian
Carboniferous
Carboniferous/Permian
Cenozoic
classification
Cretaceous
Devonian
general
Holocene
Jurassic
K-T boundary
Kansas
lithofacies
Mesozoic
methods
midcontinent
Miocene
Mississippian
Neogene
nomenclature
north
northwest
Ordovician
Paleozoic
Pennsylvanian
Pennsylvanian/Permian
Pennylvanian
Permian
Permo-Pennsylvanian
Phanerozoic
Pleistocene
Pleistocene/Holocene
Pliocene
Precambrian
processes
Proterozoic
Quaternary
regional
Silurian
south-central
southwest
stratigraphic gaps
stratigraphic units
Tertiary
Triassic
Unknown
west