
1) Geological period 2) Lower carboniferous 3) Lower carboniferous period 4) Missippian period 5) Period
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https://www.crosswordclues.com/clue/mississippian
[geology] The Mississippian (also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earliest/lowermost of two subperiods of the Carboniferous period lasting from roughly {Geologic Ages Inline|Mississippian} to {Geologic Ages Inline|Pennsylvanian} mi...
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http://en.wikipedia.org/wiki/Mississippian_(geology)

Member of a prehistoric American Indian people who lived along the Mississippi River from about AD 900 until the late 18th century. Some anthropologists believe that the Mississippian culture...
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http://www.encyclo.co.uk/local/20688

A period of the Paleozoic era (after the Devonian and before the Pennsylvanian), thought to have covered the span of time between 354 and 323 million years ago; also, the corresponding system of rocks. It is named after the Mississippi River valley, where rocks of this age are well exposed. It is the approximate equivalent of the Lower Carboniferou...
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http://www.encyclo.co.uk/local/22047

A cultural period of the southeastern North American Aborigine Indians dating from 1,300 to 400 B.P. This culture shows strong Mexican influences and is assocated with many groups ancestral to the historic Muskhogean speaking tribes of the Southeast. Note that this cultural period does not relate to Northeastern Central or Western North American Ab......
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an archaeological time period from about 900 A.D. to 1700 A.D. generally associated with the appearance of organized agriculture
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Geologic period that occurred roughly 320 to 360 million years ago. During this period, insects undergo major speciation and ferns first appear. Trees become a dominant plant form on continents.
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http://www.physicalgeography.net/physgeoglos/m.html

[
n] - from 310 million to 345 million years ago 2. [n] - a resident of Mississippi
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http://www.webdictionary.co.uk/definition.php?query=Mississippian
Missippian period noun from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects
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https://www.encyclo.co.uk/local/20974

A period of the Paleozoic era, spanning the time between 360 and 325 million years ago. It is named after the Mississippi River valley, which contains good exposures of rocks of this age.
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https://www.encyclo.co.uk/local/21202

US term for the Lower or Early Carboniferous period of geological time, 363–323 million years ago. It is named after the state of Mississippi
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https://www.encyclo.co.uk/local/21221
No exact match found.