Pennsylvanian

:The Pennsylvanian is also an Amtrak train that travels from New York to Pittsburgh.

Related Topics:
Pennsylvanian - Amtrak - New York - Pittsburgh

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The Pennsylvanian is a geologic (sub)period lasting from roughly 325 million years before the present (BP) to 286 million years BP. As with most other geologic periods, the rock beds that define the period are well identified, but the exact date of the start and end are uncertain by a few million years.

Related Topics:
Geologic (sub)period - Rock

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In North America, where the early Carboniferous beds are primarily marine limestones, it is treated as a full fledged geologic period between the Mississippian and the Permian. In Europe, the Mississippian and Pennsylvanian are one more-or-less continuous sequence of lowland continental deposits and are lumped together as the Carboniferous period.

Related Topics:
North America - Carboniferous - Limestone - Geologic period - Mississippian - Permian

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Refer to the Carboniferous period article for information on faunal stages, climate, etc.

Related Topics:
Carboniferous - Faunal stages

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