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Kasimovian Stage
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A chart detailing the Carboniferous period within the Paleozoic era, showing its division into Mississippian and Pennsylvanian subperiods, with corresponding epochs, ages, and their ranges in millions of years ago. A detailed geologic time scale chart displaying Earth's history from the Hadean Eon over 4.5 billion years ago to the present, organized by eons, eras, periods, epochs, and ages with color-coded columns and corresponding dates in millions of years.
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A chart detailing the Carboniferous period within the Paleozoic era, showing its division into Mississippian and Pennsylvanian subperiods, with corresponding epochs, ages, and their ranges in millions of years ago.
Carboniferous Period. The Carboniferous Period began approximately 358.9 million years ago and ended 298.9 million years ago.

Kasimovian Stage

stratigraphy
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History

Kasimovian Stage, third of four internationally defined stages of the Pennsylvanian Subsystem of the Carboniferous System, encompassing all rocks deposited during the Kasimovian Age (307 million to 303.7 million years ago). The name is taken from the Russian city of Kasimov, which lies east of Moscow in the Moscow Basin. The section is cyclic but consists mainly of limestones and dolomitic mudstones with intercalated siltstones. The base of the stage is historically defined by the...

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