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Showing 1 to 20 of 34 for “"Paleontologia"”.
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Il potere dell'evoluzione: il dibattito sulla variabilità delle specie a Torino dall'Età napoleonica allo Stato unitario
… in alcune discipline ad essa collegate, come la paleontologia e l'antropologia, approfondendo anche il dibattito nato sui periodici scientifici, le opere divulgative e i giornali. Tale ricostruzione si accompagna ad uno studio delle interferenze tra gli orientamenti teorici adottati dagli …
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Caracterização geoquímica e paleoambiental do cretáceo inferior da Bacia de Camamu, Bahia
The Camuru basin is located in the easterns Brazilian continental margin. In this study, 94 rock samples from a single offshore well were submitted to geochemical analyses in order to assess teh depositional paleoenvirenments of the rift sequence from Camamu Basin. Pyrolysis and organic petrograph …
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Descrição osteológica do crânio de um novo dinossauro Prosauropoda do Neotriássico do sul do Brasil
ln 1998 a prosauropod skeleton was recovered from the continental Triassic red beds of the Caturrita Formation (Norian), southem Brazil. The specimen (UFSM 11069), housed in the Paleontological Collection of the Universidade Federal de Santa Maria, was coUected in the locality Água Negra, situated …
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Dati geochimici ed ecologici di foraminiferi planctonici. Implicazioni paleoceanografiche in due aree chiave: Oceano Meridionale e Mare Mediterraneo.
La studio della distribuzione spaziale e temporale della associazioni a foraminiferi planctonici, campionati in zone con differente regime idrografico, ha permesso di comprendere che molte specie possono essere diagnostiche della presenza di diverse masse d’acqua superficiali e sottosuperficiali e …
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High-resolution stratigraphy of Central and Southern Adriatic Quaternary deposits of sub-Milankovian climate change on Mediterranean circulation
This volume is a collection of the work done in a three years-lasting PhD, focused in the analysis of Central and Southern Adriatic marine sediments, deriving from the collection of a borehole and many cores, achieved thanks to the good seismic-stratigraphic knowledge of the study area. The work …
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PCO2 EFFECTS ON THE PRODUCTION OF PELAGIC BIOGENIC CARBONATE AND OCEAN CHEMISTRY: A CASE HISTORY FROM THE CRETACEOUS.
In the early Aptian, ocean experienced a global phenomenon of widespread deposition of organic carbon-rich sediments under oxygen-poor conditions, named the Oceanic Anoxic Event 1a (OAE1a) (~120 Ma) which has its sedimentary expression in the Selli Level. OAE1a represents a profound perturbation of …
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Mamíferos quaternários de Itapipoca, Ceará, Brasil, depositados no Museu Nacional, Rio de Janeiro
In this work we intended to review and organize the pleistocenic mammals material found inside tanks, in Itapipoca city, Ceará state. Nowadays, those fossils are included in the vertebrate Paleontological Collection of Museu Nacional, Rio de Janeiro. After the revision, we identified 14 species, 1 …
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Análise das pegadas fósseis de tetrápodes do Permiano Superior da Bacia do Paraná
The objectives of this dissertation are to identify, describe and interpret the fossil footprints of the Permian Paleofaunas tetrapods and to analyze the characteristics of the environments where they were produced in Irati, Rio do Rasto and Corumbataí formations. The material comprises six samples …
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BIOMINERALIZATION AND GLOBAL CHANGE: BIOTIC RESPONSE TO THE GONDWANAN GLACIATION AND SUBSEQUENT CLIMATE WARMING
The late Palaeozoic, a time-interval of roughly 100 million years comprising the Carboniferous and the Permian, has been the theatre of dramatic climate changes. Starting from greenhouse climatic conditions, this time-interval witnessed the transition to icehouse conditions in the late Visean, with …
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Descrição morfológica do crânio e mandíbula de Stratiotosuchus maxhechti (Crocodylomorpha, Cretáceo Superior do Brasil) e seu posicionamento filogenético
A detailed description of the skull and mandible of the crocodylomorph Stratiotosuchus maxhechti Campos, Suarez, Riff & Kellner, 2001 is presented here. This specimen (DGM 1477-R; housed at the Museu de Ciências da Terra, DNPM, Rio de Janeiro) was collected in 1988 at outcrops of the Adamantina …
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Osteologia e sistemática de Brannerion latum (Agassiz, 1841) (Teleostei : Albuliformes) do Aptiano-Albiano do nordeste do Brasil
Brannerion latum (Agassiz, 1841) is a medium elopomorph fish occurring in the Santana and Codó formations, respectively from the Lower Cretaceous of the Araripe and Parnaíba basins, Northeastern Brazil. Although this species was studied a long time ago, a detailed description of its osteology was …
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Taxonomia de besouros Pselaphinae (Coleoptera: Staphylinidae): descrições de novas espécies e posicionamento filogenético da fauna cretácica em relação à moderna
Recentemente, as descrições de várias espécies de artrópodes provenientes do âmbar de Kachin, Myanmar, um sítio do Cretáceo (Cenomaniano inferior, 98.79 ± 0.62 milhões de anos), têm modificado significativamente a compreensão da história evolutiva destes táxons. Apesar de existirem muitos outros …
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