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Mostrando ítems 21-30 de 1991
Metacryphaeus rotundatus, um novo elemento da fauna de trilobites calmoniidae (phacopida), da formação Ponta Grossa (Devoniano), bacia do Paraná, Brasil
(2008-04-01)
Calmoniids (Delo, 1935) are the most common and abundant group of trilobites of the fossil record of the Devonian Ponta Grossa Formation in the Apucarana sub-basin. Although known since the past century, the study of ...
Othonella araguaiana (Bivalvia, Megadesmidae) from the Corumbataí formation (Midlle Permian), eastern margin of the Paraná Basin: Systematic, evolutionary and biostratigraphic significances
(2010-07-01)
In this study, the occurrence of Othonella araguaiana Mendes, a rare bivalve species is reported for the fi rst time in the Pinzonella illusa biozone, Middle Permian Corumbataí Formation, in the State of São Paulo. This ...
ContribuiÇÃo aos estudos da precipitaÇÃo no estado do paranÁ: A oscilaÇÃo decadal do pacÍfico - ODP
(2015-12-01)
The major teleconnections of low frequency observed into Pacific Ocean, the Pacific Decadal Oscillation - PDO has been discussed as recurrent in the decadal temporality (20 and 30 years). The oscillation is characterized ...
O gênero Nectandra Rol. ex Rottb. (Lauraceae) no Estado do Paraná, BrasilThe genus Nectandra Rol. ex Rottb. (Lauraceae) in Paraná State, Brazil
(Sociedade Botânica do Brasil, 2009)
The genus Nectandra Rol. ex Rottb. (Lauraceae) in Parana State, Brazil
(Soc Botanica BrasilSao Paulo SpBrasil, 2009)
Litogeoquímica E aspectos Petrogenéticos dos basaltos da Província Magmática do Paraná na porção centro-norte do Estado de São Paulo
(2009-11-19)
The petrographic and geochemical characterization of flood basalts of Serra Geral Formation are here presented. The investigated areas are situated in four different regions of São Paulo state: Jaú, Ribeirão Preto, Franca ...
Phytoliths indicate environmental changes correlated with facies analysis in a paleo island-lake, Upper Paraná River, Brazil
(2020-04-01)
Phytolith analysis has become a useful tool for paleoenvironmental studies. Phytoliths are produced by plants and are composed of biogenic silica, giving them higher resistance to diagenetic and oxidation processes that ...
Late Pleistocene and Holocene paleoenvironments in ponds and alluvial sediments of Upper Paraná River, Brazil
(2013-01-01)
Freshwater sponge spicules were analyzed as a paleoenvironmental proxy indicator in five cores of ponds and alluvial fan sediments in the Upper Paraná River's left bank, near Querência do Norte town, northwestern of State ...
Records of ticks (Acari: Ixodidae) on humans and distribution of spotted-fever cases and its tick vectors in Paraná State, southern Brazil
(2020-11-01)
Brazilian spotted fever (BSF) is the deadliest rickettsiosis in the world. Although the epidemiology of the disease has been established in Brazil, there are still limited data available on distribution of tick vectors and ...