Editing Pennsylvanian (geology) (section)

== External links ==
* [https://web.archive.org/web/20100702114906/http://www.scotese.com/late.htm The Late Carboniferous a Time of Great Coal Swamps], Paleomap project. World map from this time period.
* [http://www.ucmp.berkeley.edu/carboniferous/carboniferous.html The Carboniferous – 354 to 290 Million Years Ago], [[University of California Museum of Paleontology]]. Information on stratigraphies, localities, tectonics, and life.
* [https://web.archive.org/web/20050305064050/http://www.palaeos.com/Paleozoic/Carboniferous/Pennsylvanian.htm The Pennsylvanian Epoch of the Carboniferous Period: 318 to 299 Mya], Paleos.com
* [https://pubs.usgs.gov/imap/i-2768/i2768.pdf US Geological Survey comparison of time scales]

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[[Category:Geological epochs]]
[[Category:Carboniferous United States|*]]