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Mississippian

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The Mississippian is a period in the geologic timescale or a series of the geologic record. It is the earliest/lowermost of two divisions of the Carboniferous period lasting from roughly 359 to 318 Ma (million years ago). As with most other geochronologic units, the rock beds that define the Mississippian are well identified, but the exact start and end dates are uncertain by a few million years. The Mississippian is so named because rocks from this age are exposed in the Mississippi River valley.

In North America, where the interval consists primarily of marine limestones, it was in the past treated as a full-fledged geologic period between the Devonian and the Pennsylvanian. In Europe, the Mississippian and Pennsylvanian are one more-or-less continuous sequence of lowland continental deposits and are grouped together as the Carboniferous system, and sometimes called the Upper Carboniferous and Lower Carboniferous instead. During the Mississippian Epoch an important phase of orogeny occurred in the Appalachian Mountains.

Carboniferous period
Mississippian
Pennsylvanian
Lower/Early Middle
Upper/Late
Lower/Early
Middle
Upper/Late
Tournaisian Viséan Serpukhovian Bashkirian Moscovian Kasimovian | Gzhelian

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