Buscar
Mostrando ítems 1-10 de 179
First Middle Devonian bivalves from Argentina, new records from the Punta Negra Formation and insights on Middle Paleozoic faunas from Precordillera basin
(Asociacion Paleontologica Argentina, 2015-06)
Middle Devonian bivalves from Argentina are reported for the first time, based on records of the Precordilleran Punta Negra Formation(Emsian?Frasnian?), San Juan Province. This finding is the youngest Devonian record of ...
Spore diversity trends in the Middle Devonian of the Chaco-Salteño Plain, northwestern Argentina
(Elsevier Science, 2015-01)
Devonian deposits in northwestern Argentina were historically studied with stratigraphical purposes, since these layers conform the source rocks of the producing basins of the region. A fairly well preserved palynomorph ...
Lower and Middle Devonian Malvinokaffric ostracods from the Precordillera Basin of San Juan, Argentina
(Elsevier, 2013-02)
Ostracod from the upper Lower to Middle Devonian rocks of the Argentine Precordillera Basin (Talacasto and Punta Negra formations) are studied. One new genus Pircawayra nov. gen., and five species (including three new: ...
The trilobite reedops (Phacopidae) in the lower devonian of argentina (Malvinokaffric Realm)
(Paleontological Society, 2012-03)
The trilobite Reedops is documented from strata probably corresponding to the middle part of the Talacasto Formation in the Sierra de las Minitas, at the northernmost extent of the Precordillera in La Rioja Province, ...
Middle-Upper Devonian palynofloras from Argentina, systematic and correlation
(Elsevier Science, 2018-10)
This investigation documents the first palynoassemblage spanning the Middle-Upper Devonian from four outcropping sections located in northwestern Argentina. The recovered material includes fairly well-preserved palynomorphs, ...
Middle Devonian lycopsids from high southern palaeolatitudes of Gondwana (Argentina)
(Cambridge University Press, 2002-11)
Fossil plants are described from the upper part of the Devonian Lolén Formation, Sierra de la Ventana, Buenos Aires Province, Argentina, in the area of Estancia Las Acacias. The sequence is composed mainly of dark grey ...
Devonian tentaculitoidea of the malvinokaffric realm of Brazil, paraná basin
(2018-01-01)
The Tentaculitoidea is represented by extinct invertebrates characterized by small, conic, carbonate shells of animals that inhabiting exclusively marine environments. The tentaculitoids occur from the Ordovician to Devonian, ...
A revision of the Devonian Malvinokaffric dalmanitid trilobite Dalmanitoides Delo, 1935, on the basis of new data from Argentina
(Coquina Press, 2012-03)
In light of new information on holotypes and additional material from the Lower Devonian type areas from Argentina, the dalmanitid trilobite Dalmanitoides Delo, 1935,is rediagnosed and considered a dalmanitine ...
Devonian bryozoans from Argentina: new cosmopolitan components of Southwestern Gondwanan basins
(Paleontological Society, 2019-03)
Lower to probably Middle Devonian bryozoans from western Argentina are reported. Five genera of trepostomes: Leptotrypa, Leptotrypella, Eridotrypella, Cyphotrypa, Boardmanella, and the cryptostome ?Pseudonematopora are ...
Paleoecologic trends of Devonian Malvinokaffric fauna from the Paraná Basin as evidenced by trace fossils
(2021-08-01)
The Malvinokaffric Realm is an endemic paleogeographic region that inhabited Gondwanan high latitude seas during Early-Middle Devonian times. The causes for the collapse of this fauna are still debated but seem to be related ...