The Middle Pennsylvanian is the second of three subepochs of the
References
* [http://www.stratigraphy.org/geowhen/stages/Middle_Pennsylvanian.html GeoWhen Database - Middle Pennsylvanian]
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Pennsylvanian — This article is about the geologic subperiod. For passenger train, see Pennsylvanian (Amtrak). System Subsystem/ Series Stage Age (Ma) Permian Cisuralian Asselian younger … Wikipedia
Middle Pleistocene — Subdivisions of the Quaternary Period System Series Stage Age (Ma) Quaternary Holocene 0–0.0117 Pleistocene Tarantian (Upper) 0.0117–0.126 … Wikipedia
Middle Jurassic — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith … Wikipedia
Middle Triassic — System Series Stage Age (Ma) Jurassic Lower Hettangian younger Triassic Upper … Wikipedia
Middle Colonies — Regional statistics U.S. States … Wikipedia
Pennsylvanian — 1. noun a) An inhabitant or a resident of the state of Pennsylvania. b) Any of the three Pennsylvanian epochs. 2. adjective a) of any of the three … Wiktionary
Pennsylvanian — System Subsystem Stufe ≈ Alter (mya) höher höher höher jünger Karbon Pennsylvanium Gzhelium … Deutsch Wikipedia
Carboniferous — For the album by Zu see Carboniferous (album). Carboniferous Period 359.2–299 million years ago … Wikipedia
Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies … Wikipedia
amphibian — /am fib ee euhn/, n. 1. any cold blooded vertebrate of the class Amphibia, comprising frogs and toads, newts and salamanders, and caecilians, the larvae being typically aquatic, breathing by gills, and the adults being typically semiterrestrial,… … Universalium
