Results 1 to 10 of about 1,694,874 (301)
Genomic Insights into the Ancestry and Demographic History of South America. [PDF]
PLoS Genetics, 2015 South America has a complex demographic history shaped by multiple migration and admixture events in pre- and post-colonial times. Settled over 14,000 years ago by Native Americans, South America has experienced migrations of European and African ...
Julian R Homburger +12 more
doaj +7 more sources
Reconstructing the Deep Population History of Central and South America [PDF]
Cell, 2018 نبلغ عن الحمض النووي القديم على مستوى الجينوم من 49 فردًا يشكلون أربعة مقاطع زمنية متوازية في بليز والبرازيل وجبال الأنديز الوسطى والمخروط الجنوبي، ويعود تاريخ كل منها إلى ما لا يقل عن 9000 سنة مضت. انتشر سكان الأجداد المشتركون بسرعة من واحد فقط من الفرعين الأولين اللذين ساهما في الأمريكيين الأصليين اليوم.
Cosimo Posth +2 more
exaly +8 more sources
Kinematics of the South Atlantic rift [PDF]
Solid Earth, 2013 The South Atlantic rift basin evolved as a branch of a large Jurassic–Cretaceous intraplate rift zone between the African and South American plates during the final break-up of western Gondwana. While the relative motions between South America and Africa
C. Heine, J. Zoethout, R. D. Müller
doaj +6 more sources
Mitochondrial DNA Diversity in South America and the Genetic History of Andean Highlanders [PDF]
Molecular Biology and Evolution, 2003 We analyzed mtDNA sequence variation in 590 individuals from 18 south Amerindian populations. The spatial pattern of mtDNA diversity in these populations fits well the model proposed on the basis of Y-chromosome data. We found evidence of a differential action of genetic drift and gene flow in western and eastern populations, which has led to genetic ...
Silvia Fuselli +2 more
exaly +4 more sources
Spatial and temporal uplift history of South America from calibrated drainage analysis [PDF]
Geochemistry, Geophysics, Geosystems, 2017 A multidisciplinary approach is used to analyze the Cenozoic uplift history of South America.Residual depth anomalies of oceanic crust abutting this continent help to determine the pattern of present-day dynamic topography.
Veronica Rodriguez Tribaldos +2 more
exaly +5 more sources
Five new malformed trilobites from Cambrian and Ordovician deposits from the Natural History Museum [PDF]
PeerJ, 2023 Injured trilobites present insight into how a completely extinct group of arthropods responded to traumatic experiences, such as failed predation and moulting complications.
Russell D.C. Bicknell, Patrick M. Smith
doaj +2 more sources
Open Archaeology, 2021 The archaeological site of the Domus Romana in Rabat, Malta was excavated almost 100 years ago yielding artefacts from the various phases of the site. The Melite Civitas Romana project was designed to investigate the domus, which may have been the home ...
Tanasi Davide +5 more
doaj +1 more source
Phylogeny and biogeography of the carnivorous plant family Sarraceniaceae. [PDF]
PLoS ONE, 2012 The carnivorous plant family Sarraceniaceae comprises three genera of wetland-inhabiting pitcher plants: Darlingtonia in the northwestern United States, Sarracenia in eastern North America, and Heliamphora in northern South America. Hypotheses concerning
Aaron M Ellison +6 more
doaj +1 more source
Cycling in South America, 1880-1920
Anuario Colombiano de Historia Social y de la Cultura, 2020 Historians have tended to ignore the South American experience of cycling. The continent’s diverse history of sports has been effaced by a popular and academic focus on soccer.
Matthew Brown
doaj +1 more source
Genetics and Molecular Biology, 2013 The puma is an iconic predator that ranges throughout the Americas, occupying diverse habitats. Previous phylogeographic analyses have revealed that it exhibits moderate levels of genetic structure across its range, with few of the classically recognized
Eunice M. Matte +7 more
doaj +1 more source