Results 101 to 110 of about 2,327 (226)

Presencia de Sagenopteris en facies wealdense de la provincia de Burgos. Estudio fitodermatológico [PDF]

open access: yes, 1982
[ES] Se analizan por primera vez en España restos de Sagenopteris. Estos fósiles proceden de niveles wealdenses de la provincia de Burgos, y como resultado de este estudio se incluyen dentro de la especie S. mantellí Dunker.
Álvarez Ramis, Concepción
core  

Peat-forming plants in the Maastrichtian coals of the Eastern Pyrenees [PDF]

open access: yes, 2012
The Lower Maastrichtian of Fumanya and neighbouring localities of the Vallcebre syncline (Eastern Pyrenees, Catalonia) provide the first taphonomic evidence for the hypothesis that cheirolepidiacean conifers were significant precursors of Maastrichtian ...
Fernández Marrón, Ma. Teresa   +4 more
core   +6 more sources

Distribution and DNA profiling of Cycas beddomei Dyer. : A critical endangered gymnosperm.

open access: yesAgricultura, 2014
Cycas beddomei is a   critically endangered  plant species belonging to the cycadales of the  gymnosperm under family Cycadaceae grown in the hill slopes and grassy woodland forest.  It is considered as a living fossil, as its distribution is very ...
Gyana Ranjan Rout
doaj   +1 more source

Evolutionary histories determine DNA barcoding success in vascular plants: seven case studies using intraspecific broad sampling of closely related species [PDF]

open access: yes, 2016
List of individuals. For each individual, the country, district, and absolute coordinates in decimal degrees are given.
Sofia Caetano Wyler, Yamama Naciri
core   +4 more sources

Comparative anatomy of leaflets of Zamia acuminata and Z. pseudomonticola (Zamiaceae) in Costa Rica

open access: yesRevista de Biología Tropical, 2013
The genus Zamia is morphologically and ecologically the most diverse of the order Cycadales. Throughout its history this genus has been restricted to the New World and is presently almost entirely restricted to the Neotropics.
Rafael Acuña-Castillo   +1 more
doaj   +2 more sources

Impact of Late Pleistocene-Holocene climatic fluctuations on the phylogeographic structure and historical demographics of Zamia prasina (Cycadales: Zamiaceae)

open access: yesBotan‪ical Sciences, 2019
Background: Glacial periods during the Pleistocene have been hypothesized to have greatly influenced geographical patterns of genetic structure and demography of many tropical species.
Grecia Montalvo-Fernández   +7 more
doaj   +1 more source

Plant macrofossils and Biostratigraphy of the Calshaneh section, NW Tabas and its palaeoclimate analysis [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2016
Jurassic deposits are well exposed in the Calshaneh area, north western of the Tabas city, Central-East Iran. It contains plant macrofossils belonging to seventeen species allocated to eleven genera of various orders such as of Equisetales, Filicales ...
Fatemeh Vaez-Javadi
doaj  

Revisión de la paleoflora de la Formación Nestares (Jurásico temprano), provincia del Neuquén y Río Negro, Argentina [PDF]

open access: yes, 2013
Fil: Morel, Eduardo Manuel. División Paleobotánica. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La PlataFil: Ganuza, Daniel Gustavo. División Paleobotánica. Facultad de Ciencias Naturales y Museo.
Artabe, Analía Emilia Eva   +3 more
core  

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