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  1 / 11566 MEDLINE  
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[PMID]:29343713
[Au] Autor:Hare VJ; Loftus E; Jeffrey A; Ramsey CB
[Ad] Endereço:Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1 South Parks Road, Oxford, OX1 3TG, UK. vincent.john.hare@gmail.com.
[Ti] Título:Atmospheric CO effect on stable carbon isotope composition of terrestrial fossil archives.
[So] Source:Nat Commun;9(1):252, 2018 01 17.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The C/ C ratio of C plant matter is thought to be controlled by the isotopic composition of atmospheric CO and stomatal response to environmental conditions, particularly mean annual precipitation (MAP). The effect of CO concentration on C/ C ratios is currently debated, yet crucial to reconstructing ancient environments and quantifying the carbon cycle. Here we compare high-resolution ice core measurements of atmospheric CO with fossil plant and faunal isotope records. We show the effect of pCO during the last deglaciation is stronger for gymnosperms (-1.4 ± 1.2‰) than angiosperms/fauna (-0.5 ± 1.5‰), while the contributions from changing MAP are -0.3 ± 0.6‰ and -0.4 ± 0.4‰, respectively. Previous studies have assumed that plant C/ C ratios are mostly determined by MAP, an assumption which is sometimes incorrect in geological time. Atmospheric effects must be taken into account when interpreting terrestrial stable carbon isotopes, with important implications for past environments and climates, and understanding plant responses to climate change.
[Mh] Termos MeSH primário: Atmosfera/química
Dióxido de Carbono/química
Isótopos de Carbono/análise
Clima
Fósseis
Plantas/metabolismo
[Mh] Termos MeSH secundário: Ciclo do Carbono
Isótopos de Carbono/química
Mudança Climática
Fotossíntese
Chuvas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Carbon Isotopes); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180119
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02691-x


  2 / 11566 MEDLINE  
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[PMID]:29335537
[Au] Autor:Hu D; Clarke JA; Eliason CM; Qiu R; Li Q; Shawkey MD; Zhao C; D'Alba L; Jiang J; Xu X
[Ad] Endereço:Shenyang Normal University, Paleontological Museum of Liaoning, Key Laboratory for Evolution of Past Life in Northeast Asia, Ministry of Land and Resources, 253 North Huanghe Street, 110034, Shenyang, China. hudongyu@synu.edu.cn.
[Ti] Título:A bony-crested Jurassic dinosaur with evidence of iridescent plumage highlights complexity in early paravian evolution.
[So] Source:Nat Commun;9(1):217, 2018 01 15.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The Jurassic Yanliao theropods have offered rare glimpses of the early paravian evolution and particularly of bird origins, but, with the exception of the bizarre scansoriopterygids, they have shown similar skeletal and integumentary morphologies. Here we report a distinctive new Yanliao theropod species bearing prominent lacrimal crests, bony ornaments previously known from more basal theropods. It shows longer arm and leg feathers than Anchiornis and tail feathers with asymmetrical vanes forming a tail surface area even larger than that in Archaeopteryx. Nanostructures, interpreted as melanosomes, are morphologically similar to organized, platelet-shaped organelles that produce bright iridescent colours in extant birds. The new species indicates the presence of bony ornaments, feather colour and flight-related features consistent with proposed rapid character evolution and significant diversity in signalling and locomotor strategies near bird origins.
[Mh] Termos MeSH primário: Aves/anatomia & histologia
Osso e Ossos/anatomia & histologia
Dinossauros/anatomia & histologia
Plumas/anatomia & histologia
Fósseis
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Cor
Voo Animal
Melanossomas
Asas de Animais/anatomia & histologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180117
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02515-y


  3 / 11566 MEDLINE  
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[PMID]:29380889
[Au] Autor:Villmoare B
[Ad] Endereço:Department of Anthropology, University of Nevada, Las Vegas, Box 455003, 4505 S. Maryland Pkwy, Las Vegas, Nevada, 89154-5003.
[Ti] Título:Early Homo and the role of the genus in paleoanthropology.
[So] Source:Am J Phys Anthropol;165 Suppl 65:72-89, 2018 01.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The history of the discovery of early fossils attributed to the genus Homo has been contentious, with scholars disagreeing over the generic assignment of fossils proposed as members of our genus. In this manuscript I review the history of discovery and debate over early Homo and evaluate the various taxonomic hypotheses for the genus. To get a sense of how hominin taxonomy compares to taxonomic practice outside paleoanthropology, I compare the diversity of Homo to genera in other vertebrate clades. Finally, I propose a taxonomic model that hews closely to current models for hominin phylogeny and is consistent with taxonomic practice across evolutionary biology.
[Mh] Termos MeSH primário: Hominidae/classificação
Paleontologia/métodos
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Feminino
Fósseis
Seres Humanos
Masculino
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180131
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23387


  4 / 11566 MEDLINE  
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[PMID]:29293618
[Au] Autor:Platt BF; Suarez CA; Boss SK; Williamson M; Cothren J; Kvamme JAC
[Ad] Endereço:Department of Geology and Geological Engineering, University of Mississippi, University, Mississippi, United States of America.
[Ti] Título:LIDAR-based characterization and conservation of the first theropod dinosaur trackways from Arkansas, USA.
[So] Source:PLoS One;13(1):e0190527, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:LIDAR-based analyses of the first theropod dinosaur trackways known from the state of Arkansas, USA are reported. The trackways were found on a limestone bedding plane in the Albian De Queen Formation in an active gypsum quarry. Because limited access precluded thorough field study, fieldwork focused on preserving the entire site digitally with ground-based LIDAR, and detailed measurements were later taken digitally from point cloud data. The site contains eight tridactyl trackways associated with sauropod trackways and numerous isolated tracks. Although there appear to be two different tridactyl morphotypes, we show that the tracks are all likely from a single species of trackmaker. We apply a simple method of estimating substrate consistency by comparing the differences between true track dimensions and apparent track dimensions. The tridactyl tracks at the southern end of the site are preserved with significantly greater differences in true vs. apparent dimensions and are shallower than the rest of the tridactyl tracks at the site, which we interpret as the result of outward expansion of the soft tissues of the foot upon contact with a firm substrate. We interpret the firm substrate as having high bulk density and high shear strength, which also explain associated manus-only sauropod tracks. We show that the tridactyl tracks are likely from theropod trackmakers and that footprint lengths, trackway paces, stride lengths, and pace angulations of the De Queen trackways are statistically indistinguishable from equivalent measurements of theropod trackways in the Glen Rose Formation. The Glen Rose tracks are attributed to the large-bodied theropod, Acrocanthosaurus and we likewise attribute the De Queen tracks to Acrocanthosaurus, which is known from skeletal remains in temporally equivalent units and from the mine itself.
[Mh] Termos MeSH primário: Dinossauros
Fósseis
Paleontologia
[Mh] Termos MeSH secundário: Animais
Arkansas
Dinossauros/anatomia & histologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190527


  5 / 11566 MEDLINE  
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[PMID]:28989097
[Au] Autor:Lindgren AR; Anderson FE
[Ad] Endereço:The Center for Life in Extreme Environments, Department of Biology, Portland State University, 1719 SW 10th Ave, SRTC Rm 246, Portland, OR 97201, USA. Electronic address: arl3@pdx.edu.
[Ti] Título:Assessing the utility of transcriptome data for inferring phylogenetic relationships among coleoid cephalopods.
[So] Source:Mol Phylogenet Evol;118:330-342, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Historically, deep-level relationships within the molluscan class Cephalopoda (squids, cuttlefishes, octopods and their relatives) have remained elusive due in part to the considerable morphological diversity of extant taxa, a limited fossil record for species that lack a calcareous shell and difficulties in sampling open ocean taxa. Many conflicts identified by morphologists in the early 1900s remain unresolved today in spite of advances in morphological, molecular and analytical methods. In this study we assess the utility of transcriptome data for resolving cephalopod phylogeny, with special focus on the orders of Decapodiformes (open-eye squids, bobtail squids, cuttlefishes and relatives). To do so, we took new and previously published transcriptome data and used a unique cephalopod core ortholog set to generate a dataset that was subjected to an array of filtering and analytical methods to assess the impacts of: taxon sampling, ortholog number, compositional and rate heterogeneity and incongruence across loci. Analyses indicated that datasets that maximized taxonomic coverage but included fewer orthologs were less stable than datasets that sacrificed taxon sampling to increase the number of orthologs. Clades recovered irrespective of dataset, filtering or analytical method included Octopodiformes (Vampyroteuthis infernalis + octopods), Decapodiformes (squids, cuttlefishes and their relatives), and orders Oegopsida (open-eyed squids) and Myopsida (e.g., loliginid squids). Ordinal-level relationships within Decapodiformes were the most susceptible to dataset perturbation, further emphasizing the challenges associated with uncovering relationships at deep nodes in the cephalopod tree of life.
[Mh] Termos MeSH primário: Cefalópodes/classificação
Transcriptoma
[Mh] Termos MeSH secundário: Animais
Teorema de Bayes
Cefalópodes/genética
Decapodiformes/classificação
Decapodiformes/genética
Fósseis
Funções Verossimilhança
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171010
[St] Status:MEDLINE


  6 / 11566 MEDLINE  
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[PMID]:29371624
[Au] Autor:Da Silva FO; Fabre AC; Savriama Y; Ollonen J; Mahlow K; Herrel A; Müller J; Di-Poï N
[Ad] Endereço:Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, 00014, Helsinki, Finland.
[Ti] Título:The ecological origins of snakes as revealed by skull evolution.
[So] Source:Nat Commun;9(1):376, 2018 01 25.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The ecological origin of snakes remains amongst the most controversial topics in evolution, with three competing hypotheses: fossorial; marine; or terrestrial. Here we use a geometric morphometric approach integrating ecological, phylogenetic, paleontological, and developmental data for building models of skull shape and size evolution and developmental rate changes in squamates. Our large-scale data reveal that whereas the most recent common ancestor of crown snakes had a small skull with a shape undeniably adapted for fossoriality, all snakes plus their sister group derive from a surface-terrestrial form with non-fossorial behavior, thus redirecting the debate toward an underexplored evolutionary scenario. Our comprehensive heterochrony analyses further indicate that snakes later evolved novel craniofacial specializations through global acceleration of skull development. These results highlight the importance of the interplay between natural selection and developmental processes in snake origin and diversification, leading first to invasion of a new habitat and then to subsequent ecological radiations.
[Mh] Termos MeSH primário: Evolução Biológica
Filogenia
Crânio/anatomia & histologia
Serpentes/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Biodiversidade
Ecologia
Ecossistema
Fósseis
Tamanho do Órgão
Paleontologia
Filogeografia
Crânio/fisiologia
Serpentes/classificação
Serpentes/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180127
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02788-3


  7 / 11566 MEDLINE  
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[PMID]:29300767
[Au] Autor:Chung MY; Vu SH; López-Pujol J; Herrando-Moraira S; Son S; Suh GU; Le HTQ; Chung MG
[Ad] Endereço:Department of Biology and the Research Institute of Natural Science, Gyeongsang National University, Jinju, Republic of Korea.
[Ti] Título:Comparison of genetic variation between northern and southern populations of Lilium cernuum (Liliaceae): Implications for Pleistocene refugia.
[So] Source:PLoS One;13(1):e0190520, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The so-called "Baekdudaegan" (BDDG), a mountain range that stretches along the Korean Peninsula, has been recently proposed as a major "southern" glacial refugium for boreal or temperate plant species based on palaeoecological and, especially, genetic data. Genetic studies comparing genetic variation between population occurring on the BDDG and more northern ones (i.e. in NE China and/or in Russian Far East) are, however, still too few to draw firm conclusions on the role of the BDDG as a refugium and a source for possible northward post-glacial recolonizations. In order to fill this gap, we selected a boreal/temperate herb, Lilium cernuum, and compared levels of allozyme-based genetic diversity of five populations from NE China with five populations from South Korea (home of its hypothesized refuge areas). As a complementary tool, we used the maximum entropy algorithm implemented in MaxEnt to infer the species' potential distribution for the present time, which was projected to different past climate scenarios for the Last Glacial Maximum (LGM). Permutation tests revealed that Korean populations harbored significantly higher levels of within-population genetic variation than those from NE China (expected heterozygosity = 0.173 vs. 0.095, respectively). Our results suggest that the lowered levels of genetic diversity in NE Chinese populations might be due to founder effects associated with post-glacial migration from southern regions. Congruent with genetic data, past distribution models showed higher probability of occurrence in southern ranges than in northern ones during the LGM. In addition, a positive correlation was detected between the expected heterozygosity and environmental LGM suitability. From a conservation perspective, our results further suggest that the southern populations in South Korea may be particularly worthy of protection.
[Mh] Termos MeSH primário: Variação Genética
Liliaceae/genética
[Mh] Termos MeSH secundário: Algoritmos
Ásia
Fósseis
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180105
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190520


  8 / 11566 MEDLINE  
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[PMID]:28464269
[Au] Autor:Cameron N; Bogin B; Bolter D; Berger LR
[Ad] Endereço:Centre for Global Health and Human Development, School of Sport, Exercise and Health Sciences, Loughborough University, LE11 3TU, United Kingdom.
[Ti] Título:The postcranial skeletal maturation of Australopithecus sediba.
[So] Source:Am J Phys Anthropol;163(3):633-640, 2017 07.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: In 2008, an immature hominin defined as the holotype of the new species Australopithecus sediba was discovered at the 1.9 million year old Malapa site in South Africa. The specimen (MH1) includes substantial post-cranial skeletal material, and provides a unique opportunity to assess its skeletal maturation. METHODS: Skeletal maturity indicators observed on the proximal and distal humerus, proximal ulna, distal radius, third metacarpal, ilium and ischium, proximal femur and calcaneus were used to assess the maturity of each bone in comparison to references for modern humans and for wild chimpanzees (Pan troglodytes). RESULTS: In comparison to humans the skeletal maturational ages for Au. sediba correspond to between 12.0 years and 15.0 years with a mean (SD) age of 13.1 (1.1) years. In comparison to the maturational pattern of chimpanzees the Au. sediba indicators suggest a skeletal maturational age of 9-11 years. Based on either of these skeletal maturity estimates and the body length at death of MH1, an adult height of 150-156 cm is predicted. DISCUSSION: We conclude that the skeletal remains of MH1 are consistent with an ape-like pattern of maturity when dental age estimates are also taken into consideration. This maturity schedule in australopiths is consistent with ape-like estimates of age at death for the Nariokotome Homo erectus remains (KMN-WT 15000), which are of similar postcranial immaturity to MH1. The findings suggest that humans may have distinctive and delayed post-cranial schedules from australopiths and H. erectus, implicating a recent evolution of somatic and possibly life history strategies in human evolution.
[Mh] Termos MeSH primário: Evolução Biológica
Fósseis
Hominidae/anatomia & histologia
Crânio/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Antropologia Física
Hominidae/crescimento & desenvolvimento
Crânio/crescimento & desenvolvimento
África do Sul
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23234


  9 / 11566 MEDLINE  
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[PMID]:29370188
[Au] Autor:Mosquera M; Ollé A; Rodríguez-Álvarez XP; Carbonell E
[Ad] Endereço:Àrea de Prehistòria, Universitat Rovira i Virgili (URV), Avinguda de Catalunya 35, Tarragona, Spain.
[Ti] Título:Shedding light on the Early Pleistocene of TD6 (Gran Dolina, Atapuerca, Spain): The technological sequence and occupational inferences.
[So] Source:PLoS One;13(1):e0190889, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This paper aims to update the information available on the lithic assemblage from the entire sequence of TD6 now that the most recent excavations have been completed, and to explore possible changes in both occupational patterns and technological strategies evidenced in the unit. This is the first study to analyse the entire TD6 sequence, including subunits TD6.3 and TD6.1, which have never been studied, along with the better-known TD6.2 Homo antecessor-bearing subunit. We also present an analysis of several lithic refits found in TD6, as well as certain technical features that may help characterise the hominin occupations. The archaeo-palaeontological record from TD6 consists of 9,452 faunal remains, 443 coprolites, 1,046 lithic pieces, 170 hominin remains and 91 Celtis seeds. The characteristics of this record seem to indicate two main stages of occupation. In the oldest subunit, TD6.3, the lithic assemblage points to the light and limited hominin occupation of the cave, which does, however, grow over the course of the level. In contrast, the lithic assemblages from TD6.2 and TD6.1 are rich and varied, which may reflect Gran Dolina cave's establishment as a landmark in the region. Despite the occupational differences between the lowermost subunit and the rest of the deposit, technologically the TD6 lithic assemblage is extremely homogeneous throughout. In addition, the composition and spatial distribution of the 12 groups of lithic refits found in unit TD6, as well as the in situ nature of the assemblage demonstrate the high degree of preservation at the site. This may help clarify the nature of the Early Pleistocene hominin occupations of TD6, and raise reasonable doubt about the latest interpretations that support the ex situ character of the assemblage as a whole.
[Mh] Termos MeSH primário: Hominidae
Paleontologia
[Mh] Termos MeSH secundário: Animais
Arqueologia
Evolução Biológica
Fósseis/história
História Antiga
Seres Humanos
Espanha
Tecnologia/história
Comportamento de Utilização de Ferramentas
[Pt] Tipo de publicação:HISTORICAL ARTICLE; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180213
[Lr] Data última revisão:
180213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180126
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190889


  10 / 11566 MEDLINE  
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[PMID]:29337994
[Au] Autor:Vialet A; Modesto-Mata M; Martinón-Torres M; Martínez de Pinillos M; Bermúdez de Castro JM
[Ad] Endereço:Muséum national d'Histoire naturelle, UMR7194, UPVD, Centre Européen de Recherches Préhistoriques de Tautavel, Paris, France.
[Ti] Título:A reassessment of the Montmaurin-La Niche mandible (Haute Garonne, France) in the context of European Pleistocene human evolution.
[So] Source:PLoS One;13(1):e0189714, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We here present a comparative study of the Montmaurin-LN Middle Pleistocene mandible (Haute-Garonne, France). This mandible, of which its right and left molar series are preserved in situ, was found in La Niche cave (Montmaurin's karst system) in 1949, and was first attributed to the 'Mindel-Riss' interglacial (= MIS 9 to 11) based on its geological context. Later studies based on geological and faunal evidence have attributed the Montmaurin-LN mandible to MIS 7. Following a detailed morphological and metric comparative study of the mandible in the 1970s, it was interpreted in the light of a still limited fossil record and the prevailing paradigm back then. Waiting for geochronological studies in the forthcoming years, here we review the main morphological and metrical features of this mandible and its molars, which have been reassessed in the framework of a remarkably enlarged Pleistocene fossil record since the mandible was first described, and our current, more in-depth understanding of human evolution in Europe. Using a selection of mandibular features with potential taxonomic signal we have found that the Montmaurin-LN mandible shares only a few derived traits with Neandertals. Our analyses reveal that this mandible is more closely related to the ancient specimens from the African and Eurasian Early and Middle Pleistocene, particularly due to the presence of primitive features of the Homo clade. In contrast, the external morphology of the molars is clearly similar to that of Neandertals. The results are assessed in the light of the present competing hypotheses used to explain the European hominin fossil record.
[Mh] Termos MeSH primário: Evolução Biológica
Fósseis
Mandíbula/anatomia & histologia
[Mh] Termos MeSH secundário: Europa (Continente)
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180210
[Lr] Data última revisão:
180210
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180117
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189714



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