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Foley, Nicole M.; Mason, Victor C.; Harris, Andrew J.; Bredemeyer, Kevin R.; Damas, Joana; Lewin, Harris A.; Eizirik, Eduardo; Gatesy, John; Karlsson, Elinor K.; Lindblad-Toh, Kerstin; Springer, Mark S.; Murphy, William J.; Andrews, Gregory; Armstrong, Joel C.; Bianchi, Matteo; Birren, Bruce W.; Bredemeyer, Kevin R.; Breit, Ana M.; Christmas, Matthew J.; Clawson, Hiram; Damas, Joana; Di Palma, Federica; Diekhans, Mark; Dong, Michael X.; [...]

A genomic timescale for placental mammal evolution

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  • Medientyp: E-Artikel
  • Titel: A genomic timescale for placental mammal evolution
  • Beteiligte: Foley, Nicole M.; Mason, Victor C.; Harris, Andrew J.; Bredemeyer, Kevin R.; Damas, Joana; Lewin, Harris A.; Eizirik, Eduardo; Gatesy, John; Karlsson, Elinor K.; Lindblad-Toh, Kerstin; Springer, Mark S.; Murphy, William J.; Andrews, Gregory; Armstrong, Joel C.; Bianchi, Matteo; Birren, Bruce W.; Bredemeyer, Kevin R.; Breit, Ana M.; Christmas, Matthew J.; Clawson, Hiram; Damas, Joana; Di Palma, Federica; Diekhans, Mark; Dong, Michael X.; [...]
  • Erschienen: American Association for the Advancement of Science (AAAS), 2023
  • Erschienen in: Science
  • Sprache: Englisch
  • DOI: 10.1126/science.abl8189
  • ISSN: 0036-8075; 1095-9203
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:p>The precise pattern and timing of speciation events that gave rise to all living placental mammals remain controversial. We provide a comprehensive phylogenetic analysis of genetic variation across an alignment of 241 placental mammal genome assemblies, addressing prior concerns regarding limited genomic sampling across species. We compared neutral genome-wide phylogenomic signals using concatenation and coalescent-based approaches, interrogated phylogenetic variation across chromosomes, and analyzed extensive catalogs of structural variants. Interordinal relationships exhibit relatively low rates of phylogenomic conflict across diverse datasets and analytical methods. Conversely, X-chromosome versus autosome conflicts characterize multiple independent clades that radiated during the Cenozoic. Genomic time trees reveal an accumulation of cladogenic events before and immediately after the Cretaceous-Paleogene (K-Pg) boundary, implying important roles for Cretaceous continental vicariance and the K-Pg extinction in the placental radiation.</jats:p>