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The Middle Pennsylvanian is the second of three subepochs of the Pennsylvanian epoch of the Carboniferous period. It spans the time between 311.7 ± 1.1 Ma and 306.5 ± 1 Ma (million years ago). It has one faunal stage, the Moscovian. The word epoch can mean either an interval of time, or a particular point in time used as a reference point. ... Jump to: navigation, search 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... Jump to: navigation, search The geologic time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ... Jump to: navigation, search The Carboniferous is a major division of the geologic timescale that extends from the end of the Devonian period, about 359. ... Jump to: navigation, search The geologic time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ... Mega-annum, usually abbreviated as Ma, is a unit of time equal to one million years. ... Faunal stages are a subdivision of geologic time used primarily by paleontologists who study fossils rather than by geologists who study rock formations. ...

References

GeoWhen Database - Middle Pennsylvanian

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

Categories: Geology stubs | Carboniferous Jump to: navigation, search The Carboniferous is a major division of the geologic timescale that extends from the end of the Devonian period, about 359. ... Jump to: navigation, search This article is about the geologic period; for the North American culture, see Mississippian culture. ... Jump to: navigation, search 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... Jump to: navigation, search The Early Mississippian (also known as the Lower Mississippian) is the first of three subepochs of the Mississippian epoch of the Carboniferous period. ... Jump to: navigation, search The Middle Mississippian is the second of three subepochs of the Mississippian epoch of the Carboniferous period. ... Jump to: navigation, search The Late Mississippian (also known as the Upper Mississippian) is the third and final of three subepochs of the Mississippian epoch of the Carboniferous period. ... Jump to: navigation, search The Early Pennsylvanian (also known as the Lower Pennsylvanian) is the first of three subepochs of the Pennsylvanian epoch of the Carboniferous period. ... Jump to: navigation, search The Late Pennsylvanian (also known as the Upper Pennsylvanian) is the third and final of three subepochs of the Pennsylvanian epoch of the Carboniferous period. ... Jump to: navigation, search This article needs to be cleaned up to conform to a higher standard of quality. ...

Results from FactBites:

Pennsylvanian Period (511 words)
	The Kanawha Formation was deposited in West Virginia during the Middle Pennsylvanian Period, and yields 26 of the 62 minable coal seams officially identified in West Virginia.
	During the Pennsylvanian Period the continental plates of Africa, Europe, and North America were in collision, forming volcanic mountain ranges along their margins as oceanic crust was subducted under the relatively lighter continental crust.
	The Pangean mountain- building supplied sediments which began forming deltas in southeastern West Virginia during the early Pennsylvanian Period, and through continual shoreline accretion gradually pushed the coastline northwestward into northern West Virginia by the end of the Pennsylvanian Period.

Pennsylvanian Fossil Site Geology (2158 words)
	The identification of stomach ejecta pellets, which are probably of fish, reptilian, or amphibian origin, and the presence of insects, aquatic arthropods, molluscs, and crustaceans in the fossil record establish additional faunal diversity for this ancient environment.
	This conclusion agrees with other middle Pennsylvanian studies in the Illinois Basin (Baird et al., 1985; Utgaard and Givens, 1978) and is supported by the geographical location of the North American portion of the Laurasia supercontinent 305 Ma.
	This conclusion is in agreement with paleontology and paleoecology studies of the middle Pennsylvanian in Illinois (Weller, 1957; Utgaard and Givens, 1978; Palmer et al., 1979; Carpenter, 1979; Nitecki, 1979; Baird et al., 1985; Leary, 1988).

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