1) Amtrak route 2) Geological period 3) Pennsylvanian period 4) Period 5) Upper carboniferous 6) Upper carboniferous period
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1) Easterner 2) Keyestoner
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[geology] The Pennsylvanian (also known as Upper Carboniferous or Late Carboniferous) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period. It lasted from roughly {Period span|Pennsylvanian} Ma (million years ago). As with most other geochronologic units, the rock beds tha...
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http://en.wikipedia.org/wiki/Pennsylvanian_(geology)
[train] The Pennsylvanian is a 444-mile (715 km) daytime Amtrak train running between New York and Pittsburgh via Philadelphia. The trains travel across the Appalachian Mountains, through Pennsylvania`s capital Harrisburg, the Pennsylvania Dutch Country, suburban and central Philadelphia, and New Jersey en route to New York. Trains run once...
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http://en.wikipedia.org/wiki/Pennsylvanian_(train)
A period of the Paleozoic era (after the Mississippian and before the Permian), thought to have covered the span of time between 323 and 290 million years ago; also, the corresponding system of rocks. It is named after the state of Pennsylvania in which rocks of this age are widespread and yield much coal. It is the approximate equivalent of the Up...
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Geologic period that occurred roughly 286 to 320 million years ago. During this period, the first reptiles and winged insects appear.
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http://www.physicalgeography.net/physgeoglos/p.html
[
n] - from 280 million to 310 million years ago 2. [n] - a resident of Pennsylvania
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http://www.webdictionary.co.uk/definition.php?query=Pennsylvanian
Pennsylvanian period noun from 310 million to 280 million years ago; warm climate; swampy land
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A period of the Paleozoic era, spanning the time between 325 and 286 million years ago. It is named after the state of Pennsylvania where rocks of this age are widespread.
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https://www.encyclo.co.uk/local/21202
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