Tafonomia dos Pygocephalomorpha (Crustacea, Peracarida), subgrupo Irati, Permiano, Bacia do Paraná, Brasil: implicações paleoecológicas e paleambientais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Foraminíferos atuais em um manguezal impactado por petróleo 20 anos atrás: o Rio Iriri, canal de Bertioga, Santos-SP

Pós-graduação em Geociências e Meio Ambiente - IGCE

Distribuição dos foraminíferos recentes associados à vegetação na faixa estuarina do Rio Itapanhaú, Bertioga, São Paulo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A nação pela pedra: coleções de paleontologia no Brasil, 1836-1844

A formação e o estudo de coleções de história natural e de paleontologia participaram da instauração da ordem política do Império do Brasil, delineando também uma ordem científica. A simbiose entre ciência e nação encontrou em Peter W. Lund, iniciador dos estudos de paleontologia em nosso país, um agente ativo e constante. As coleções e escritos desse naturalista deram amparo à visualização do passado e à escrita da história em museus, instituições científicas e culturais brasileiras e europeias. As disputas pelo ordenamento político sob as Regências e a Maioridade foram acompanhadas de perto pelo estudo e a explicação das formas de vida e do globo no passado.

Icnofósseis (paleotocas e crotovinas) atribuídos a mamíferos extintos no sudeste e sul do Brasil

ICHNOFOSSILS (PALEO-BURROWS and CROTOVINES) ATTRIBUTED TO EXTINCT MAMMALS IN SOUTHEASTERN and SOUTH BRAZIL. This work presents information regarding tunnels which are attributed to large extinct mammals. These structures can be found in several places in southeastern and southern Brazil, in different types of substrate, occurring as hollow structures (paleo-burrows) or those filled with sediments (crotovines). The dimensions and osteoderm and claw imprints found along the internal walls of the paleo-burrow found on aluvial fan deposits near the town of Cristal (Rio Grande do Sul State) suggest that a dasypodid xenarthran might have dug this structure. Comparison with similar structures found in Argentina can provide more detailed information regarding the paleoecology and biostratigraphy of the organisms that made these burrows.

Tafonomia dos Pygocephalomorpha (Crustacea, Peracarida, Malacostraca), Permiano, Bacia do Paraná, Brasil, e seu significado paleoambiental

Taphonomy of the pygocephalomorpha (Crustacea, Peracarida, Malacostraca), Permian, Paraná Basin, Brazil, and its paleoenvironmental meaning. Crustaceans (Pygocephalomorpha, Peracarida) are the main fossil invertebrates recorded in the Early Permian Assistência Formation, Irati Subgroup, State of São Paulo, Paraná Basin. For this study, samples taken from the base of the Ipeúna Member, Bairrinho Bed, State of São Paulo, were analyzed and complemented by fossils from the Irati Formation, State of Rio Grande do Sul. The taphonomic spectrum of the pygocephalomorphs includes three main preservational modes: Type 1. Complete pygocephalomorphs (with outstretched or flexed abdomen), which are associated to cream-colored mudstones and more commonly to black shales. In rare cases, molds of soft parts are preserved. They suffered rapid burial (hours to days) by mud blankets associated to storm events in anoxic bottoms, below storm wave base with minimum bottom disruption, followed by low rates of background sedimentation; Type 2. Partly articulated (carapace and abdomen, with or without caudal fan and without appendages) pygocephalomorphs, with extended or flexed abdomen, which are present in cream-colored pelites, associated with hummocky cross-stratifications, intercalated with black shales. These may represent individuals or remains lying in the sediment-water interface preserved by rapid burial associated to episodic sedimentation events; Type 3. Disarticulated pygocephalomorphs, with isolated carapaces, abdomen, or abdominal segments. This is the predominant preservational mode in our samples. The skeletal remains can be found isolated or in dense, bioclast-supported concentrations (micro-coquines), representing proximal to distal tempestites. Finally, the extreme preservational quality seen in crustaceans of the Type 1 recorded in black shales, occasionally with molds of soft parts, indicates that the host rocks may represent Konservat-Lagerstätten deposits, as already suggested to coeval occurrences of the Irati Formation in Uruguay. © 2013 by the Sociedade Brasileira de Paleontologia.

Paleofauna de vertebrados, com ênfase em répteis e mamíferos, dos depósitos quartenários da região da Serra da Bodoquena, Mato Grosso do Sul, Brasil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Geomorfologia do megaleque do Rio Paraguai, quaternário do pantanal mato-grossense, centro-oeste do Brasil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A formação Serra Alta, Permiano, no centro-leste do Estado de São Paulo, Bacia do Paraná, Brasil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Icnofósseis (paleotocas e crotovinas) atribuídos a mamíferos extintos no sudeste e sul do Brasil

ICHNOFOSSILS (PALEO-BURROWS and CROTOVINES) ATTRIBUTED TO EXTINCT MAMMALS IN SOUTHEASTERN and SOUTH BRAZIL. This work presents information regarding tunnels which are attributed to large extinct mammals. These structures can be found in several places in southeastern and southern Brazil, in different types of substrate, occurring as hollow structures (paleo-burrows) or those filled with sediments (crotovines). The dimensions and osteoderm and claw imprints found along the internal walls of the paleo-burrow found on aluvial fan deposits near the town of Cristal (Rio Grande do Sul State) suggest that a dasypodid xenarthran might have dug this structure. Comparison with similar structures found in Argentina can provide more detailed information regarding the paleoecology and biostratigraphy of the organisms that made these burrows.

Homogeneidade e heterogeneidade nos sistemas educacionais: Argentina, Brasil, Chile e México

This study focus on the reconfiguration of educational management in Argentina, Brazil, Chile and Mexico, which was promoted by the new logic of social regulation and the new role attributed to the State, considering each country's own historicity. So, the cultural factors that interfere on the dynamics of the 90' school reform are analyzed. Aspects that show the homogeneity or heterogeneity of these reforms in the region, as well as local specificities that block out the concretization of the reform are underlined. It is shown that the historicity that characterizes the educational reform has taken, in each country, a form that can be called, in Mexico, conservative rupture; in Chile, conservative continuity; in Brazil, conservative renovation; and, in Argentina, interrupted rupture. Some conclusions about the impact of educational reform in the selected countries are recuperated through the analysis of 186 academic texts on the subject.

Políticas sociais de atendimento às crianças e aos adolescentes no Brasil

This article analyses the emergence and development of social policies for children and adolescents attendance that are in line with the development process of the Brazilian social protection system, focusing on some of the main representations attributed to childhood, according to the historical and political periods. It seeks to present the notion of childhood instituted under the constitution of the Brazilian welfare state, in such a way as to place it within the broader context of the historical and political transformations that involved the emergence and consolidation of the social policies directed towards children and adolescents in Brazil in the 20th century and the beginning of the 21st.

Reflexão sobre alguns desafios do ensino médio no Brasil hoje

The purpose of this article is to develop some ideas that may contribute to the debate about the secondary education in Brazil, giving emphasis to the conditions existing in the educational institutions, the ongoing educational policies and the challenges posed by the social, economic and political reality of the country. It is also discussed the political, social and economic importance of the expansion and the compulsory character of secondary education as well as the school's culture dimension, in its relationship to the so-called knowledge society. Finally, the role of secondary education for the youth and the new demands it poses for teachers are presented, among some others aspects.

Governamentalidade democrática e ensino de Filosofia no Brasil contemporâneo

This article takes the concepts of biopower and governmentality as the starting point for an analysis of certain recent Brazilian government documents about the introduction of Philosophy as a subject in secondary school. In the 1980s, this argument centered on Philosophy's so-called criticism and its potential for preparing citizens for a democratic society, was used by the movements aimed to restore democracy in Brazil. This argument appears to have been assimilated by the Brazilian government, because it is stated in the Guidelines and Bases of Education Law, secondary school students should demonstrate knowledge of philosophy necessary for the exercise of citizenship. The argument also appears in documents such as the PCN and PCN+ (National Curricular Parameters) and OCEM (Curriculum Guidelines for Secondary School) in their chapters on Philosophy. These documents are examined here in the light of governmentality, making explicit how Philosophy is equipped to train young people according to what is understood as a modern democratic society.