The Pennsylvanian is an epoch of the Carboniferous period lasting from roughly 325 Ma to 286 Ma (million years ago). 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. The Pennsylvanian is named after the state of Pennsylvania where rocks from this age are widespread.

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.

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

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Exploring the possibility of creating a panel of leading Pennsylvanian's to discuss a Constitutional Convention in PA.
WesStefanick (Wes Stefanick) Thu, 07 Jan 2010 15:02:50 -0000
Exploring the possibility of creating a panel of leading Pennsylvanian's to discuss a Constitutional Convention in PA.
As a Pennsylvanian, I scoff at this being called a "winter storm."
jparm1 (Jason Parmer) Thu, 07 Jan 2010 14:26:26 -0000
As a Pennsylvanian, I scoff at this being called a "winter storm."
@1SupremeGoddess hi to a fellower Pennsylvanian who clings to guns and religion. :)
dukiegal (Karen B) Thu, 07 Jan 2010 13:43:23 -0000
@1SupremeGoddess hi to a fellower Pennsylvanian who clings to guns and religion. :)
Pennsylvanian Rick Laubach joins Florida Tour travelers ... full story on superdirtcarseries.com
SuperDIRTcar (Super DIRTcar Series) Thu, 07 Jan 2010 12:41:46 -0000
Pennsylvanian Rick Laubach joins Florida Tour travelers ... full story on superdirtcarseries.com
luxury travel Feeling just a little 'Up in the Air' myself, actually: Daily Pennsylvanian (blog) And it is general... http://bit.ly/4M6GTe
TravelNewsFeeds (Travel News Feeds) Wed, 06 Jan 2010 20:22:18 -0000
luxury travel Feeling just a little 'Up in the Air' myself, actually: Daily Pennsylvanian (blog) And it is general... http://bit.ly/4M6GTe
family travel Feeling just a little 'Up in the Air' myself, actually: Daily Pennsylvanian (blog) Much business tra... http://bit.ly/4M6GTe
TravelNewsFeeds (Travel News Feeds) Wed, 06 Jan 2010 19:06:03 -0000
family travel Feeling just a little 'Up in the Air' myself, actually: Daily Pennsylvanian (blog) Much business tra... http://bit.ly/4M6GTe

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