Category:Paleozoic shale by country

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Precambrian Phanerozoic shale by country
Preceded by Proterozoic Eon
Paleozoic Era Mesozoic Era Cenozoic Era
Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Paleogene Neogene 4ry

Subcategories

This category has the following 2 subcategories, out of 2 total.