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The largest freshwater odontocete: A South Asian river dolphin relative from the proto-Amazonia.
Sci Adv
March 2024
Departamento de Paleontología de Vertebrados, Museo de Historia Natural-Universidad Nacional Mayor de San Marcos, Avenida Arenales 1256, Lima 11, Peru.
Several dolphin lineages have independently invaded freshwater systems. Among these, the evolution of the South Asian river dolphin and its relatives (Platanistidae) remains virtually unknown as fossils are scarce. Here, we describe gen.
View Article and Find Full Text PDFBayesian Total-Evidence Dating Revisits Sloth Phylogeny and Biogeography: A Cautionary Tale on Morphological Clock Analyses.
Syst Biol
May 2024
Institut des Sciences de l'Évolution de Montpellier, UMR 5554, Université de Montpellier, CNRS, IRD, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
Combining morphological and molecular characters through Bayesian total-evidence dating allows inferring the phylogenetic and timescale framework of both extant and fossil taxa, while accounting for the stochasticity and incompleteness of the fossil record. Such an integrative approach is particularly needed when dealing with clades such as sloths (Mammalia: Folivora), for which developmental and biomechanical studies have shown high levels of morphological convergence whereas molecular data can only account for a limited percentage of their total species richness. Here, we propose an alternative hypothesis of sloth evolution that emphasizes the pervasiveness of morphological convergence and the importance of considering the fossil record and an adequate taxon sampling in both phylogenetic and biogeographic inferences.
View Article and Find Full Text PDFComprehensive phylogenomic time tree of bryophytes reveals deep relationships and uncovers gene incongruences in the last 500 million years of diversification.
Am J Bot
November 2023
Département de Biologie, Université Laval, Québec, Québec, G1V 0A6, Canada.
Premise: Bryophytes form a major component of terrestrial plant biomass, structuring ecological communities in all biomes. Our understanding of the evolutionary history of hornworts, liverworts, and mosses has been significantly reshaped by inferences from molecular data, which have highlighted extensive homoplasy in various traits and repeated bursts of diversification. However, the timing of key events in the phylogeny, patterns, and processes of diversification across bryophytes remain unclear.
View Article and Find Full Text PDFAn eosimiid primate of South Asian affinities in the Paleogene of Western Amazonia and the origin of New World monkeys.
Proc Natl Acad Sci U S A
July 2023
Programa de Pós-Graduação em Geociências, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, Brazil.
Recent fossil discoveries in Western Amazonia revealed that two distinct anthropoid primate clades of African origin colonized South America near the Eocene/Oligocene transition ( 34 Ma). Here, we describe a diminutive fossil primate from Brazilian Amazonia and suggest that, surprisingly, a third clade of anthropoids was involved in the Paleogene colonization of South America by primates. This new taxon, gen.
View Article and Find Full Text PDFA global catalog of whole-genome diversity from 233 primate species.
Science
June 2023
IBE, Institute of Evolutionary Biology (UPF-CSIC), Department of Medicine and Life Sciences, Universitat Pompeu Fabra. PRBB, C. Doctor Aiguader N88, 08003 Barcelona, Spain.
The rich diversity of morphology and behavior displayed across primate species provides an informative context in which to study the impact of genomic diversity on fundamental biological processes. Analysis of that diversity provides insight into long-standing questions in evolutionary and conservation biology and is urgent given severe threats these species are facing. Here, we present high-coverage whole-genome data from 233 primate species representing 86% of genera and all 16 families.
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