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Variations in angiosperm leaf vein density have implications for interpreting life form in the fossil record

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dc.contributor.author Crifò, Camilla en
dc.contributor.author Currano, Ellen D. en
dc.contributor.author Baresch, A. en
dc.contributor.author Jaramillo, C. en
dc.date.accessioned 2015-02-25T18:30:23Z
dc.date.available 2015-02-25T18:30:23Z
dc.date.issued 2014
dc.identifier.citation Crifò, Camilla, Currano, Ellen D., Baresch, A., and Jaramillo, C. 2014. "<a href="https://stri-apps.si.edu/docs/publications/pdfs/Crifo_2014_Geology_LVD.pdf">Variations in angiosperm leaf vein density have implications for interpreting life form in the fossil record</a>." <em>Geology</em>. 42 (10):919&ndash;922. <a href="https://doi.org/10.1130/G35828.1">https://doi.org/10.1130/G35828.1</a> en
dc.identifier.issn 0091-7613
dc.identifier.uri http://hdl.handle.net/10088/24629
dc.description.abstract It is often difficult to interpret plant life form and position within a forest based on fossils of isolated plant organs. Here we propose leaf vein density as a new tool to interpret fossil angiosperm life form, and in particular to trace the emergence of angiosperms as members of the canopy. Angiosperm leaf vein density was analyzed in two tropical forests and one temperate forest. Comparisons of vein density between canopy and understory plants showed that vein density variation mainly reflected the position of the leaf in the canopy, independent of ecological strategy (shade tolerant versus sun demanding), phylogenetic position, and site (tropical versus temperate). Vein density values of a standing forest were reflected in its leaf litter, suggesting that fossil leaf assemblages are representative of past forest ecosystems. Comparison of vein density distributions of Cretaceous–Paleocene paleofloras (132.35–58.0 Ma) to those of a modern tropical leaf litter assemblage suggests that angiosperms emerged in forest canopies by at least 58 Ma. en
dc.relation.ispartof Geology en
dc.title Variations in angiosperm leaf vein density have implications for interpreting life form in the fossil record en
dc.type Journal Article en
dc.identifier.srbnumber 127977
dc.identifier.doi 10.1130/G35828.1
rft.jtitle Geology
rft.volume 42
rft.issue 10
rft.spage 919
rft.epage 922
dc.description.SIUnit STRI en
dc.citation.spage 919
dc.citation.epage 922
dc.relation.url https://stri-apps.si.edu/docs/publications/pdfs/Crifo_2014_Geology_LVD.pdf


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