The Pennsylvanian is a subperiod of the Carboniferous period lasting from roughly   to  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.

Generalized geographic map of the United States in Middle Pennsylvanian time.

All modern classes of fungi were present in the Late Carboniferous (Pennsylvanian Epoch).^[1]

References

1. ↑ Blackwell, Meredith, Vilgalys, Rytas, James, Timothy Y., and Taylor, John W. 2008. Fungi. Eumycota: mushrooms, sac fungi, yeast, molds, rusts, smuts, etc.. Version 21 February 2008. http://tolweb.org/Fungi/2377/2008.02.21 in The Tree of Life Web Project, http://tolweb.org/

External links

• http://www.scotese.com/late.htm Provides a picture of the world from this time period.
• http://www.ucmp.berkeley.edu/carboniferous/carboniferous.html Information on stratigraphies, localities, tectonics, and life.
• http://www.palaeos.com/Paleozoic/Carboniferous/Pennsylvanian.htm

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