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Incised channel fills containing conifers indicate that seasonally dry vegetation dominated Pennsylvanian tropical lowlands

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dc.contributor.author Falcon-Lang, Howard J. en
dc.contributor.author Nelson, W. John en
dc.contributor.author Elrick, Scott en
dc.contributor.author Looy, Cindy V. en
dc.contributor.author Ames, Philip R. en
dc.contributor.author DiMichele, William A. en
dc.date.accessioned 2010-02-12T20:11:05Z
dc.date.available 2010-02-12T20:11:05Z
dc.date.issued 2009
dc.identifier.citation Falcon-Lang, Howard J., Nelson, W. John, Elrick, Scott, Looy, Cindy V., Ames, Philip R., and DiMichele, William A. 2009. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F8610">Incised channel fills containing conifers indicate that seasonally dry vegetation dominated Pennsylvanian tropical lowlands</a>." <em>Geology</em>. 37 (10):923&ndash;926. <a href="https://doi.org/10.1130/G30117A.1">https://doi.org/10.1130/G30117A.1</a> en
dc.identifier.issn 0091-7613
dc.identifier.uri http://hdl.handle.net/10088/8610
dc.description.abstract The idea that the Pennsylvanian tropical lowlands were temporally dominated by rainforest (i.e., the Coal Forest) is deeply ingrained in the literature. Here we challenge two centuries of research by suggesting that this concept is based on a taphonomic artifact, and that seasonally dry vegetation dominated instead. This controversial finding arises from the discovery of a new middle Pennsylvanian (Moscovian) fossil plant assemblage in southeast Illinois, United States. The assemblage, which contains xerophytic walchian conifers, occurs in channels incised into a calcic Vertisol below the Baker Coal. These plants grew on seasonally dry tropical lowlands inferred to have developed during a glacial phase. This xerophytic flora differs markedly from that of the typical clubmoss-dominated Coal Forest developed during deglaciation events. Although preserved only very rarely, we argue that such xerophytic floras were temporally as dominant, and perhaps more dominant, than the iconic Coal Forests, which are overrepresented in the fossil record due to taphonomic megabias. These findings require the iconography of Pennsylvanian tropical lowlands to be redrawn. en
dc.relation.ispartof Geology en
dc.title Incised channel fills containing conifers indicate that seasonally dry vegetation dominated Pennsylvanian tropical lowlands en
dc.type Journal Article en
dc.identifier.srbnumber 80183
dc.identifier.doi 10.1130/G30117A.1
rft.jtitle Geology
rft.volume 37
rft.issue 10
rft.spage 923
rft.epage 926
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Paleobiology en
dc.citation.spage 923
dc.citation.epage 926


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