Results 171 to 180 of about 6,127 (222)

The Mississippian-Pennsylvanian Boundary

1978
In the type regions for the Mississippian and Pennsylvanian Systems, the boundary between the two systems occurs at a hiatus that varies laterally in age. The section across the boundary seems to be complete in the central Appalachian region, where a reference section has been established for the Pennsylvanian in West Virginia. However, the scarcity of
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Cycads: Evidence from the Upper Pennsylvanian

Science, 1969
The fossil record of true cycads is extended from the Upper Triassic to the upper Pennsylvanian.
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Pennsylvanian idioms

Notes and Queries, 1870
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Pennsylvanian

2014
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The Pennsylvanian

Sewanee Review, 2009
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Pennsylvanian paleogeography of Arizona

Black Mesa Basin, northeastern Arizona, 1958
Kay Havenor, Willard D. Pyr
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Pennsylvanian flora in Croatia

2011
Land flora was collected at several sites in the Velebit Mt. Flora is Carboniferous in age, dominantly consisting of pteridosperms and primitive gymnosperms. Samples are stored in collections of Croatian Museum of Natural History and Faculty of Science.
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Update of the Pennsylvanian palynostratigraphy from central-western Argentina

Journal of South American Earth Sciences, 2021
Silvia N Cesari
exaly  

Palynology of late Middle Pennsylvanian coal beds in the Appalachian Basin

International Journal of Coal Geology, 2002
Cortland F Eble
exaly  

Pennsylvanians, the

2012
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