Topology, divergence dates, and macroevolutionary inferences vary between different tip-dating approaches applied to fossil theropods (Dinosauria)

dc.contributor.author Bapst, D. W.
dc.contributor.author Wright, April
dc.contributor.author Wright, A. M.
dc.contributor.author Matzke, N. J.
dc.contributor.author Lloyd, G. T.
dc.contributor.department Ecology, Evolution and Organismal Biology
dc.date 2018-02-18T11:44:46.000
dc.date.accessioned 2020-06-30T02:17:13Z
dc.date.available 2020-06-30T02:17:13Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-07-01
dc.description.abstract <p>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 stronglysupported 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 treesamples 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.</p>
dc.description.comments <p>This is a manuscript of an article from <em>Biology Letters </em>12 (2016): 20160237, doi: <a href="http://dx.doi.org/10.1098/rsbl.2016.0237" target="_blank">10.1098/rsbl.2016.0237</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/eeob_ag_pubs/211/
dc.identifier.articleid 1214
dc.identifier.contextkey 10195561
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath eeob_ag_pubs/211
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/23081
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/eeob_ag_pubs/211/2016_Wright_TopologyDivergence.pdf|||Fri Jan 14 22:34:45 UTC 2022
dc.source.uri 10.1098/rsbl.2016.0237
dc.subject.disciplines Ecology and Evolutionary Biology
dc.subject.disciplines Evolution
dc.subject.disciplines Genetics
dc.subject.keywords tip-dating
dc.subject.keywords divergence dates
dc.subject.keywords phylogenetic comparative methods
dc.subject.keywords theropods
dc.title Topology, divergence dates, and macroevolutionary inferences vary between different tip-dating approaches applied to fossil theropods (Dinosauria)
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication ddd5aa16-ec62-46d3-8b71-ca658bc9dd5a
relation.isOrgUnitOfPublication 6fa4d3a0-d4c9-4940-945f-9e5923aed691
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