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Pesquisa : I01.076.368.584.311 [Categoria DeCS]
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Id: lil-769585
Autor: Tomassi, HZ.; Almeida, CM.; Ferreira, BC.; Brito, MB.; Barberi, M.; Rodrigues, GC.; Teixeira, SP.; Capuzzo, JP.; Gama-Júnior, JM.; Santos, MGKG..
Título: Preliminar results of paleontological salvage at Belo Monte Powerplant construction / Resultados preliminares do programa de salvamento paleontológico da construção da Hidrelétrica de Belo Monte
Fonte: Braz. j. biol;75(3s1):277-289, Aug. 2015. graf.
Idioma: en.
Resumo: Abstract In this paper some preliminary fossil specimens are presented. They represent a collection sampled by Belo Monte’s Programa de Salvamento do Patrimônio Paleontológico (PSPP), which includes unprecedented invertebrate fauna and fossil vertebrates from Pitinga, Jatapu, Manacapuru, Maecuru e Alter do Chão formations from Amazonas basin, Brazil. The Belo Monte paleontological salvage was able to recover 495 microfossil samples and 1744 macrofossil samples on 30 months of sampling activities, and it is still ongoing. The macrofossils identified are possible plant remains, ichnofossils, graptolites, brachiopods, molluscs, athropods, Agnatha, palynomorphs (miosphores, acritarchs, algae cysts, fungi spores and unidentified types) and unidentified fossils. However, deep scientific research is not part of the scope of the program, and this collection must be further studied by researchers who visit Museu Paraense Emilio Goeldi, where the fossils will be housed. More material will be collected until the end of the program. The collection sampled allows a mosaic composition with the necessary elements to assign, in later papers, taxonomic features which may lead to accurate species identification and palaeoenvironmental interpretations.

Resumo Neste artigo são apresentados de forma preliminar alguns espécimes fósseis representativos do acervo coletado no Programa de Salvamento do Patrimônio Paleontológico (PSPP) da UHE Belo Monte, que inclui fauna vertebrada e invertebrada inédita das formações Pitinga, Jatapu, Manacapuru, Maecuru e Alter do Chão, da bacia do Amazonas, Brasil. No salvamento paleontológico de Belo Monte foi possível recuperar 495 amostras para microfósseis e 1744 amostras com macrofósseis em 30 meses de amostragem, que ainda continua em andamento. Os macrofósseis identificados são possíveis restos de plantas, icnofósseis, graptolitos, braquiópodes, moluscos, artópodes, Agnatha, palinomorfos (miósporos, acritarcas, cistos de alga, esporos de fungo e tipos indeterminados) além de fósseis não identificados. No entanto, pesquisa científica aprofundada não é parte do escopo do programa, e esta coleção deve ser estudada no futuro por pesquisadores pela visita ao Museu Paraense Emilio Goeldi, onde os fósseis ficarão depositados. Mais material será coletado até o fim de 2015. A assemblagem coletada permite a composição de mosaico com elementos necessários para a definição, em artigos futuros, características taxonômicas que levarão à identificação precisa de espécies e interpretações paleoambientais.
Descritores: Fósseis
Invertebrados/classificação
Plantas/classificação
Vertebrados/classificação
-Brasil
Paleontologia
Centrais Elétricas
Rios
Limites: Animais
Responsável: BR1.1 - BIREME


  2 / 122 LILACS  
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Id: biblio-886803
Autor: NEVES, WALTER A; BERNARDO, DANILO V; PANTALEONI, IVAN.
Título: Morphological affinities of Homo naledi with other Plio-Pleistocene hominins: a phenetic approach
Fonte: An. acad. bras. ciênc;89(3,supl):2199-2207, 2017. tab, graf.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); . Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP).
Resumo: ABSTRACT Recent fossil material found in Dinaledi Chamber, South Africa, was initially described as a new species of genus Homo, namely Homo naledi. The original study of this new material has pointed to a close proximity with Homo erectus. More recent investigations have, to some extent, confirmed this assignment. Here we present a phenetic analysis based on dentocranial metric variables through Principal Components Analysis and Cluster Analysis based on these fossils and other Plio-Pleistocene hominins. Our results concur that the Dinaledi fossil hominins pertain to genus Homo. However, in our case, their nearest neighbors are Homo habilis and Australopithecus sediba. We suggest that Homo naledi is in fact a South African version of Homo habilis, and not a new species. This can also be applied to Australopithecus sediba.
Descritores: Crânio/anatomia & histologia
Hominidae/anatomia & histologia
Hominidae/genética
Fósseis/anatomia & histologia
-África do Sul
Evolução Biológica
Limites: Animais
Responsável: BR1.1 - BIREME


  3 / 122 LILACS  
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Id: biblio-886804
Autor: KELLNER, ALEXANDER W A; CALVO, JORGE O.
Título: New azhdarchoid pterosaur (Pterosauria, Pterodactyloidea) with an unusual lower jaw from the Portezuelo Formation (Upper Cretaceous), Neuquén Group, Patagonia, Argentina
Fonte: An. acad. bras. ciênc;89(3,supl):2003-2012, 2017. graf.
Idioma: en.
Projeto: National University of Comahue; . Agencia Nacional de Promoción Científica y Tecnológica project; . Conselho Nacional de Desenvolvimento Científico e Tecnológico; . Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro.
Resumo: ABSTRACT A new azhdarchoid pterosaur from the Upper Cretaceous of Patagonia is described. The material consists of an incomplete edentulous lower jaw that was collected from the upper portion of the Portezuelo Formation (Turonian-Early Coniacian) at the Futalognko site, northwest of Neuquén city, Argentina. The overall morphology of Argentinadraco barrealensis gen. et sp. nov. indicates that it belongs to the Azhdarchoidea and probable represents an azhdarchid species. The occlusal surface of the anterior portion is laterally compressed and shows blunt lateral margins with a medial sulcus that are followed by two well-developed mandibular ridges, which in turn are bordered laterally by a sulcus. The posterior end of the symphysis is deeper than in any other azhdarchoid. This unique construction of the lower jaw suggests the existence of an elaborate interlocking mechanism with the upper jaw. Furthermore, although speculative, it is advocated here that Argentinadraco barrealensis might have used the lower jaw to obtain its prey by cutting or ploughing through unconsolidated sediment in shallow waters, a feeding behavior not previously proposed for pterosaurs.
Descritores: Dinossauros/anatomia & histologia
Fósseis
Mandíbula/anatomia & histologia
-Filogenia
Argentina
Dinossauros/classificação
Limites: Animais
Responsável: BR1.1 - BIREME


  4 / 122 LILACS  
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Id: biblio-886617
Autor: CHENG, XIN; JIANG, SHUNXING; WANG, XIAOLIN; KELLNER, ALEXANDER W A.
Título: Premaxillary crest variation within the Wukongopteridae (Reptilia, Pterosauria) and comments on cranial structures in pterosaurs
Fonte: An. acad. bras. ciênc;89(1):119-130, Jan,-Mar. 2017. tab, graf.
Idioma: en.
Projeto: National Natural Science Foundation of China; . Major Research plan of the National Natural Science Foundation of China; . Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology (CAS), the Hundred Talents Project of Chinese Academy of Sciences, the National Science Fund for Distinguished Young Scholars; . National Key Basic Research Program of China; . Fundação Carlos Chagas Filho de Amparo à Pesquisa do Rio de Janeiro; . Conselho Nacional de Desenvolvimento Científico e Tecnológico.
Resumo: ABSTRACT Cranial crests show considerable variation within the Pterosauria, a group of flying reptiles that developed powered flight. This includes the Wukongopteridae, a clade of non-pterodactyloids, where the presence or absence of such head structures, allied with variation in the pelvic canal, have been regarded as evidence for sexual dimorphism. Here we discuss the cranial crest variation within wukongopterids and briefly report on a new specimen (IVPP V 17957). We also show that there is no significant variation in the anatomy of the pelvis of crested and crestless specimens. We further revisit the discussion regarding the function of cranial structures in pterosaurs and argue that they cannot be dismissed a priori as a valuable tool for species recognition.
Descritores: Répteis/anatomia & histologia
Crânio/anatomia & histologia
Fósseis/anatomia & histologia
Maxila/anatomia & histologia
-Valores de Referência
Répteis/classificação
China
Fatores Sexuais
Voo Animal
Limites: Animais
Responsável: BR1.1 - BIREME


  5 / 122 LILACS  
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Id: biblio-886619
Autor: RICHTER, MARTHA; BOSETTI, ELVIO P; HORODYSKI, RODRIGO S.
Título: Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil
Fonte: An. acad. bras. ciênc;89(1):103-118, Jan,-Mar. 2017. graf.
Idioma: en.
Resumo: ABSTRACT We report on the pioneering discovery of Devonian fish remains in the Paraná Basin, which represents the southernmost record of fishes from that period in mainland South America. The material comes from an outcrop at the lower portion of the São Domingos Formation, within Sequence C of the Paraná-Apucarana sub-basin in Tibagi, State of Paraná. Marine invertebrates are abundant in the same strata. The dark colored fish remains were collected in situ and represent natural moulds of partially articulated shark fin rays (radials). No elements such as teeth or prismatic cartilage have been preserved with the fins rays. This can be attributed to the dissolution of calcium-phosphatic minerals at the early stages of fossilization due to diagenetic processes possibly linked to strong negative taphonomic bias. This may have contributed to the fact that fishes remained elusive in the Devonian strata of this basin, despite substantial geological work done in the Paraná State in recent decades. In addition, the scarcity of fish fossils may be explained by the fact that the Devonian rock deposits in this basin originated in a vertebrate impoverished, cold marine environment of the Malvinokaffric Realm, as previously suspected.
Descritores: Tubarões/anatomia & histologia
Sedimentos Geológicos
Nadadeiras de Animais/anatomia & histologia
Fósseis/anatomia & histologia
-Paleontologia
Brasil
Mapeamento Geográfico
Limites: Animais
Responsável: BR1.1 - BIREME


  6 / 122 LILACS  
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Id: biblio-886628
Autor: DA-GLORIA, PEDRO; OLIVEIRA, RODRIGO E; NEVES, WALTER A.
Título: Dental caries at Lapa do Santo, central-eastern Brazil: An Early Holocene archaeological site
Fonte: An. acad. bras. ciênc;89(1):307-316, Jan,-Mar. 2017. tab, graf.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico; . Fundação de Amparo à Pesquisa do Estado de São Paulo.
Resumo: ABSTRACT The origin and dispersion of the first Americans have been extensively investigated from morphological and genetic perspectives, but few studies have focused on their health and lifestyle. The archaeological site of Lapa do Santo, central-eastern Brazil, has exceptionally preserved Early Holocene human skeletons, providing 19 individuals with 327 permanent and 122 deciduous teeth dated to 9,250 to 7,500 years BP. In this study, we test whether the inhabitants of Lapa do Santo had high prevalence of dental caries as previous studies of Lagoa Santa collection have indicated, using individual and tooth as units of analyses. The results show a high prevalence of dental caries in the permanent dentition (5.50%, n=327 teeth; 69.23%, n=13 individuals) compared to other samples of hunter-gatherers worldwide. In addition, dental caries in deciduous teeth start occurring as early as 3 to 4 years old, suggesting an early start to caries. Compared with other samples from Lagoa Santa, Lapa do Santo shows statistically similar prevalence of overall caries but different caries location pattern. We believe that a subsistence adaptation to a tropical environment rich in sources of carbohydrates, such as fruits, is the best explanation for the overall caries prevalence.
Descritores: Cárie Dentária/epidemiologia
Fósseis
-Arqueologia
Brasil/epidemiologia
Prevalência
Fatores Etários
Distribuição por Sexo
Limites: Humanos
Masculino
Feminino
Adulto
Pessoa de Meia-Idade
Responsável: BR1.1 - BIREME


  7 / 122 LILACS  
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Id: biblio-886696
Autor: MÜLLER, RODRIGO T.
Título: Are the dinosauromorph femora from the Upper Triassic of Hayden Quarry (New Mexico) three stages in a growth series of a single taxon?
Fonte: An. acad. bras. ciênc;89(2):835-839, Apr.-June 2017. tab, graf.
Idioma: en.
Resumo: ABSTRACT The lagerpetid Dromomeron romeri and the theropod Tawa hallae are two dinosauromorphs from the Norian (Upper Triassic) of the Chinle Formation, situated in New Mexico, USA. However, a recent study suggests the inclusion of the holotype of D. romeri (GR 218) and paratype (GR 155) and referred (GR 235) specimens of T. hallae in an ontogenetic series of a single species. The specimens GR 218 and GR 155 include just an isolated femur, while GR235 includes femora, pelvis and tail. The inclusion of the specimens in an unique ontogenetic series relies on the putative immature condition and plastic deformation of the specimen GR 218. However, as observed here, the disparity between the femora of D. romeri and T. hallae is considerably higher than those expected from the ontogenetic variance in dinosauromorphs. In addition, D. romeri shares an unique suite of traits with Dromomeron gigas, a species known from a mature specimen. Therefore, the high disparity between D. romeri and T. hallae, lack of traits shared solely between the three femora, and a suite of traits shared between D. romeri and D. gigas, precludes the inclusion of the three femora from Hayden Quarry in a growth series of a single taxon.
Descritores: Dinossauros/anatomia & histologia
Dinossauros/classificação
Fêmur/anatomia & histologia
Fósseis/anatomia & histologia
-Filogenia
Especificidade da Espécie
New Mexico
Limites: Animais
Responsável: BR1.1 - BIREME


  8 / 122 LILACS  
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Id: biblio-886702
Autor: FIGUEIREDO, FRANCISCO J DE; RIBEIRO, DOUGLAS R M.
Título: Reassessment and Relationships of Scutatuspinosus itapagipensis (Teleostei, Clupeomorpha, Ellimmichthyiformes) from the Neocomian of Recôncavo Basin, Northeastern Brazil
Fonte: An. acad. bras. ciênc;89(2):799-823, Apr.-June 2017. tab, graf.
Idioma: en.
Resumo: ABSTRACT Clupeomorphs are found in many assemblages of the northeastern Brazil, whose ages range from the Neocomian to Paleogene. Ten species were described. Among them †Scutatuspinosus itapagipensis, a torpedo-like fish found in shales of the Marfim Formation from Bahia, remains poorly known. At first it was positioned within †Scutatuspinosinae and indicated as closely related to †Diplomystus. Diagnoses for the subfamily and genus were based on certain characters masking relationships. Recently it was placed in †Ellimmichthyiformes, but its systematic position remains controversial. We furnish additional data and restorations together with a parsimony analysis with TNT program, using 60 unordered and unweighted characters from selected species of 13 genera. Our analysis produced 12 trees with 158 steps, a consistency index (CI) of 0.44 and retention index (RI) of 0.52. Low support indices still indicate insufficient data for many taxa and uncertain status for clades. According to the majority rule consensus, †Scutatuspinosus itapagipensis is placed within a "†paraclupeine" group with †Ezkutuberezi carmenae, †Ellimma branneri, †Ellimmichthys longicostatus, and †Paraclupea chetunguensis. Its minimum age and position among †paraclupeids indicate an early history of the group older than it was thought to be, supporting a biogeographical hypothesis based on generalized track from China to northeastern Brazil during the Lower Cretaceous.
Descritores: Torpedo/anatomia & histologia
-Filogenia
Osso e Ossos/anatomia & histologia
Brasil
Torpedo/classificação
Tamanho Corporal
Filogeografia
Fósseis/anatomia & histologia
Limites: Animais
Responsável: BR1.1 - BIREME


  9 / 122 LILACS  
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Id: biblio-886738
Autor: BRUSATTE, STEPHEN L; CANDEIRO, CARLOS R A; SIMBRAS, FELIPE M.
Título: The last dinosaurs of Brazil: The Bauru Group and its implications for the end-Cretaceous mass extinction
Fonte: An. acad. bras. ciênc;89(3):1465-1485, July-Sept. 2017. graf.
Idioma: en.
Projeto: Marie Curie Career Integration Grant.
Resumo: ABSTRACT The non-avian dinosaurs died out at the end of the Cretaceous, ~66 million years ago, after an asteroid impact. The prevailing hypothesis is that the effects of the impact suddenly killed the dinosaurs, but the poor fossil record of latest Cretaceous (Campanian-Maastrichtian) dinosaurs from outside Laurasia (and even more particularly, North America) makes it difficult to test specific extinction scenarios. Over the past few decades, a wealth of new discoveries from the Bauru Group of Brazil has revealed a unique window into the evolution of terminal Cretaceous dinosaurs from the southern continents. We review this record and demonstrate that there was a diversity of dinosaurs, of varying body sizes, diets, and ecological roles, that survived to the very end of the Cretaceous (Maastrichtian: 72-66 million years ago) in Brazil, including a core fauna of titanosaurian sauropods and abelisaurid and carcharodontosaurid theropods, along with a variety of small-to-mid-sized theropods. We argue that this pattern best fits the hypothesis that southern dinosaurs, like their northern counterparts, were still diversifying and occupying prominent roles in their ecosystems before the asteroid suddenly caused their extinction. However, this hypothesis remains to be tested with more refined paleontological and geochronological data, and we give suggestions for future work.
Descritores: Dinossauros/classificação
Fósseis/anatomia & histologia
-Paleontologia
Brasil
Dinossauros/anatomia & histologia
Extinção Biológica
Limites: Animais
Responsável: BR1.1 - BIREME


  10 / 122 LILACS  
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Id: biblio-886751
Autor: PIOVESAN, ENELISE K; MELO, ROBBYSON M; LOPES, FERNANDO M; FAUTH, GERSON; COSTA, DENIZE S.
Título: Ostracoda and foraminifera from Paleocene (Olinda well), Paraíba Basin, Brazilian Northeast
Fonte: An. acad. bras. ciênc;89(3):1443-1463, July-Sept. 2017. graf.
Idioma: en.
Resumo: ABSTRACT Paleocene ostracods and planktonic foraminifera from the Maria Farinha Formation, Paraíba Basin, are herein presented. Eleven ostracod species were identified in the genera Cytherella Jones, Cytherelloidea Alexander, Eocytheropteron Alexander, Semicytherura Wagner, Paracosta Siddiqui, Buntonia Howe, Soudanella Apostolescu, Leguminocythereis Howe and, probably, Pataviella Liebau. The planktonic foraminifera are represented by the genera Guembelitria Cushman, Parvularugoglobigerina Hofker, Woodringina Loeblich and Tappan, Heterohelix Ehrenberg, Zeauvigerina Finlay, Muricohedbergella Huber and Leckie, and Praemurica Olsson, Hemleben, Berggren and Liu. The ostracods and foraminifera analyzed indicate an inner shelf paleoenvironment for the studied section. Blooms of Guembelitria spp., which indicate either shallow environments or upwelling zones, were also recorded reinforcing previous paleoenvironmental interpretations based on other fossil groups for this basin.
Descritores: Crustáceos/classificação
Foraminíferos/classificação
-Brasil
Microscopia Eletrônica de Varredura
Crustáceos/ultraestrutura
Foraminíferos/ultraestrutura
Fósseis/ultraestrutura
Limites: Animais
Responsável: BR1.1 - BIREME



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