Bapst, DW, Wright, AM, Matzke, NJ et al. (1 more author) (2016) Topology, divergence dates, and macroevolutionary inferences vary between different tip-dating approaches applied to fossil theropods (Dinosauria). Biology Letters, 12 (7). 20160237. ISSN 1744-9561
Abstract
Dated phylogenies of fossil taxa allow palaeobiologists to estimate the timing of major divergences and placement of extinct lineages, and to test macroevolutionary hypotheses. Recently developed Bayesian 'tip-dating' methods simultaneously infer and date the branching relationships among fossil taxa, and infer putative ancestral relationships. Using a previously published dataset for extinct theropod dinosaurs, we contrast the dated relationships inferred by several tip-dating approaches and evaluate potential downstream effects on phylogenetic comparative methods. We also compare tip-dating analyses to maximum-parsimony trees time-scaled via alternative a posteriori approaches including via the probabilistic cal3 method. Among tip-dating analyses, we find opposing but strongly supported relationships, despite similarity in inferred ancestors. Overall, tip-dating methods infer divergence dates often millions (or tens of millions) of years older than the earliest stratigraphic appearance of that clade. Model-comparison analyses of the pattern of body-size evolution found that the support for evolutionary mode can vary across and between tree samples from cal3 and tip-dating approaches. These differences suggest that model and software choice in dating analyses can have a substantial impact on the dated phylogenies obtained and broader evolutionary inferences.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2016 The Author(s). Published by the Royal Society. All rights reserved. This is an author produced version of "Bapst, DW, Wright, AM, Matzke, NJ & Lloyd, GT (2016) Topology, divergence dates, and macroevolutionary inferences vary between different tip-dating approaches applied to fossil theropods (Dinosauria). Biology Letters, 12 (7). 20160237," available at https://doi.org/10.1098/rsbl.2016.0237. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | tip-dating, divergence dates, phylogenetic comparative methods, theropods |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Earth Surface Science Institute (ESSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Jan 2017 16:47 |
Last Modified: | 21 Feb 2019 19:11 |
Published Version: | https://doi.org/10.1098/rsbl.2016.0237 |
Status: | Published |
Publisher: | The Royal Society |
Identification Number: | 10.1098/rsbl.2016.0237 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:110090 |