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dc.contributor.author
Martínez, Camila
dc.contributor.author
Gandolfo, Maria Alejandra
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dc.contributor.author
Cúneo, Néstor Rubén
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dc.date.available
2020-02-27T23:07:49Z
dc.date.issued
2018-09
dc.identifier.citation
Martínez, Camila; Gandolfo, Maria Alejandra; Cúneo, Néstor Rubén; Angiosperm leaves and cuticles from the uppermost Cretaceous of Patagonia, biogeographic implications and atmospheric paleo-CO2 estimates; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 89; 9-2018; 107-118
dc.identifier.issn
0195-6671
dc.identifier.uri
http://hdl.handle.net/11336/98558
dc.description.abstract
The study of plant material from localities of Late Cretaceous age from southern latitudes is fundamental to improve our understanding of global patterns of angiosperm evolution, diversity, paleoecology, and biogeography. Herein, angiosperm leaf fossils of the recently discovered Cañadón del Loro locality, from the Maastrichtian portion of the Lefipán Formation, Patagonia, Argentina are studied. Leaf architecture was used to differentiate morphotypes, to describe them, and to make comparisons with other southern latitudes floras of similar age. Six angiosperm leaf morphotypes were described from 132 collected specimens; one of them, with exceptional preservation, was named Lefipania padillae gen. et sp. nov. and its cuticle anatomy and insect damage were also described. The Cañadón del Loro fossils represent a local assemblage of low diversity deposited in an upper delta plain. Biogeographically, L. padillae was widespread throughout the southern hemisphere during the Late Cretaceous, possibly favored by a warm climate and the geographical proximity of these southern landmasses. The morphotype with well-preserved cuticles clearly shows four insect damage types attributed to feeding. This morphotype was also used for estimating paleo-atmospheric CO2 concentration (pCO2), using a stomatal-proxy gas exchange model, which resulted in approximately 464 ppm. The estimated pCO2 is in agreement with previous estimations for this time interval and supports the hypothesis of a decrease of pCO2 towards end of the Cretaceous.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
ANGIOSPERMS
dc.subject
INSECT DAMAGE
dc.subject
LATE CRETACEOUS
dc.subject
LEAF CUTICLES
dc.subject
LEFIPÁN FORMATION
dc.subject
PCO2
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Angiosperm leaves and cuticles from the uppermost Cretaceous of Patagonia, biogeographic implications and atmospheric paleo-CO2 estimates
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-26T15:01:52Z
dc.journal.volume
89
dc.journal.pagination
107-118
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Martínez, Camila. Cornell University; Estados Unidos
dc.description.fil
Fil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos
dc.description.fil
Fil: Cúneo, Néstor Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.journal.title
Cretaceous Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0195667117304937
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cretres.2018.03.015
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