Buscar
Mostrando ítems 1-10 de 25
Linguliformean Brachiopods from the Las Plantas Formation (Ordovician, Sandbian), Argentine Precordillera
(Asociación Paleontológica Argentina, 2018-06)
This paper is a brief contribution to the taxonomy of the still poorly known Ordovician lingulate brachiopods of Argentina. A linguliform brachiopod fauna from the Las Plantas Formation (Sandbian, Ordovician) in the northern ...
A new species of the Gondwanan genus Cardiolaria Munier-Chalmas in the Sandbian of northwestern Argentina: Paleobiogeographic considerations
(Pergamon-Elsevier Science Ltd, 2011-03)
A new species of afghanodesmatid, Cardiolaria benicioi, is recorded from Sandbian strata of northwestern Argentina. This species confirms the strong paleobiogeographic relationships between the western Argentina basin and ...
Graptolite and conodont faunas of Upper Ordovician (Sandbian) successions of the Argentine Precordillera: Biostratigraphic implications
(John Wiley & Sons Ltd, 2019-07)
Graptolites and conodonts are frequent fossils in Sandbian (Late Ordovician) outcrops of the Argentine Precordillera, where they present continuous and abundant records that enable detailed biostratigraphic studies. This ...
Upper ordovician (Sandbian) bryozoan fauna from argentine precordillera
(Paleontological Society, 2012-09)
A stenolaemate bryozoan fauna containing 20 species belonging to 18 genera is described from the Las Plantas and Las Aguaditas formations (Upper Ordovician, Sandbian) in San Juan Province, Precordillera of Western Argentina. ...
Linguliform microbrachiopods from Las Aguaditas and Las Chacritas Formations (Middle-Upper Ordovician) of Argentine Precordillera
(Università degli Studi di Milano, 2019-11)
Middle-Upper Ordovician linguliform microbrachiopods are described and illustrated for the first time from the Las Aguaditas Formation at the Los Blanquitos and Mogotes Azules ranges and from the Las Chacritas Formation ...
Conodont biostratigraphy and global correlation of the middle Darriwilian-Lower Sandbian (Ordovician) Las Aguaditas formation, precordillera of San Juan, ArgentinaBioestratigrafía de conodontes y correlación global del Darriwiliano medio-Sandbiano inferior (Ordovícico) Formación Las Aguaditas, precordillera de San Juan, Argentina
(Servicio Nacional de Geología y Minería, 2016-01)
En la Formación Las Aguaditas, en su sección tipo en la precordillera Argentina, se registraron conodontes del Darriwiliano medio al Sandbiano bajo. Se recuperaron un total de 9.974 especímenes de 46 muestras carbonáticas; ...
New palynological data from the Upper Ordovician of the Precordillera Basin, Argentina: A potential key for understanding the geological history of the Precordillera terrain
(Micropaleontology Press, 2013-12)
Biostratigraphic data from the Precordillera Basin have traditionally been analyzed to contribute to the understanding of its biogeographic evolution as an allochthonous microcontinent accreted to the western Gondwanan ...
Biostratigraphy and paleogeography of Middle-Late Ordovician palynomorphs from the Llanos Basin, Colombia
(Elsevier Science, 2021-03)
Diverse and moderately to well-preserved palynomorph assemblages, composed of 81 organic-walled phytoplankton species, belonging to 47 genera, and two chitinozoan species, were recorded from the Ordovician rocks of the ...
A Middle Ordovician (Darriwilian) dysaerobic brachiopod assemblage from the Precordillera Terrane of Argentina: Implications for early colonization of deep watersUna asociación disaeróbica de braquiópodos del Ordovícico medio (Darriwiliano) del terreno precordillera,argentina: implicaciones para la colonización temprana de las aguas profundas
(Asociacion Paleontologica Argentina, 2015-02)
A rapid increase of water depth associated with dysoxic bottom conditions took place in the central part of the Precordillera basin during the middle Darriwilian. The peak of transgression and drowning of the carbonate ...