Tip dating and Bayes factors provide insight into the divergences of crown bird clades across the end-Cretaceous mass extinction DOI Creative Commons
Neil Brocklehurst, Daniel J. Field

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2016)

Published: Feb. 14, 2024

The origin of crown birds (Neornithes) remains contentious owing to conflicting divergence time hypotheses obtained from alternative sources data. fossil record suggests limited diversification Neornithes in the Late Mesozoic and a substantial radiation aftermath Cretaceous–Palaeogene (K–Pg) mass extinction, approximately 66 Ma. Molecular clock studies, however, have yielded estimates for neornithine origins ranging Early Cretaceous (130 Ma) less than 10 Myr before K–Pg. We use Bayes factors compare fit node ages different molecular studies an independent morphological dataset. Our results allow us reject scenarios bird deep Cretaceous, as well within last Cretaceous. scenario best supported by our analyses is one where originated between ( ca 100 Ma), while numerous divergences major neoavian clades either span or postdate This study affirms importance K–Pg on modern birds, potential combined-evidence tip-dating illuminate recalcitrant ‘rocks versus clocks’ debates.

Language: Английский

Tip dating and Bayes factors provide insight into the divergences of crown bird clades across the end-Cretaceous mass extinction DOI Creative Commons
Neil Brocklehurst, Daniel J. Field

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2016)

Published: Feb. 14, 2024

The origin of crown birds (Neornithes) remains contentious owing to conflicting divergence time hypotheses obtained from alternative sources data. fossil record suggests limited diversification Neornithes in the Late Mesozoic and a substantial radiation aftermath Cretaceous–Palaeogene (K–Pg) mass extinction, approximately 66 Ma. Molecular clock studies, however, have yielded estimates for neornithine origins ranging Early Cretaceous (130 Ma) less than 10 Myr before K–Pg. We use Bayes factors compare fit node ages different molecular studies an independent morphological dataset. Our results allow us reject scenarios bird deep Cretaceous, as well within last Cretaceous. scenario best supported by our analyses is one where originated between ( ca 100 Ma), while numerous divergences major neoavian clades either span or postdate This study affirms importance K–Pg on modern birds, potential combined-evidence tip-dating illuminate recalcitrant ‘rocks versus clocks’ debates.

Language: Английский

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