Selecting and averaging relaxed clock models in Bayesian tip dating of Mesozoic birds
نویسندگان
چکیده
Abstract Relaxed clock models are fundamental in Bayesian dating, but a single distribution characterizing the variation is typically selected. Hence, I developed new reversible-jump Markov chain Monte Carlo (rjMCMC) algorithm for drawing posterior samples between independent lognormal (ILN) and gamma rates (IGR) models. The ability of rjMCMC to infer true model was verified through simulations. then applied Mesozoic bird data previously analyzed under white noise (WN) model. In comparison, averaging over ILN IGR provided more reliable estimates divergence times evolutionary rates. showed slightly better fit than much autocorrelated (ALN) When were partitioned, different partitions heterogeneous clocks. implementation provides general framework selecting relaxed dating analyses.
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ژورنال
عنوان ژورنال: Paleobiology
سال: 2021
ISSN: ['1938-5331', '0094-8373']
DOI: https://doi.org/10.1017/pab.2021.42