
handle: 11336/68979
Palynological assemblages composed by continental and marine palynomorphs were recovered from the Monte Chico Formation, late Cretaceous, Santa Cruz Province. In this contribution palynological assemblages of gymnosperms were studied. The samples were taken from the all section of this unit. Sixteen species of pollen grains were here determined. They belong to the genera: Araucariacites, Classopollis, Cycadopites, Dacrycarpites, Gamerroites, Lygistepollenites, Microcachyridites, Phyllocladidites, Podocarpidites and Trisaccites. On the basis of the stratigraphic distribution of the identified species, mainly in Argentina and Antarctica, and joined with the preliminary analysis determinate of spores, a Maastrichtian-Late Maastrichtian age is here suggested. The palynological assemblages indicate a typically of shore environment of deposition, with continental conditions towards to the most upper part of section. © 2012 by the Sociedade Brasileira de Paleontologia.
As assembleias palinológicas recuperadas dos sedimentos da Formação Monte Chico, Cretáceo superior, Província de Santa Cruz, apresentaram elementos marinhos (cistos de dinoflagelados) e continentais. Nessa contribuição foram estudadas as associações constituídas por grãos de pólen de gimnospermas. As amostras foram recuperadas ao longo de toda a secção. Foram descritas dezesseis espécies dos gêneros: Araucariacites, Classopollis, Cycadopites, Dacrycarpites, Gamerroites, Lygistepollenites, Microcachyridites, Phyllocladidites, Podocarpidites e Trisaccites. Com base na distribuição estratigráfica das espécies identificadas, principalmente na Argentina e na Antártida, e juntamente com a análise dos esporos realizada anteriormente, sugere-se a idade Maastrichtiano a Maastrichtiano superior. A aglutinação palinológica indica um ambiente deposicional tipicamente litorâneo, com continentalização progressiva para a parte superior da secção.
Fil: Povilauskas, Leticia Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
MONTE, https://purl.org/becyt/ford/1.5, GIMNOSPERMAS, CHICO, FORMACIÓN, https://purl.org/becyt/ford/1
MONTE, https://purl.org/becyt/ford/1.5, GIMNOSPERMAS, CHICO, FORMACIÓN, https://purl.org/becyt/ford/1
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 9 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
