New insights on angiosperm crown age based on Bayesian node dating and skyline fossilized birth-death approaches.

ABSTRACT: Despite considerable work in recent years, pinpointing the time when angiosperms originated has been challenging. However, the rapid development of molecular clock methodology has provided new tools to resolve this conundrum. In particular, the fossilized birth-death model establishes a rich interplay between molecules and stratigraphy by incorporating fossils explicitly into dating analyses. In this study, we apply Bayesian node dating and the skyline fossilized birth-death model, which differ in how the calibration is applied, to estimate the crown age of angiosperms. Node dating analyses with different calibration strategies show that the posterior distribution is strongly constrained by the effective prior at the node of crown angiosperms, dominated by the maximum age constraint. Using

SUBMITTER: Ma X 

PROVIDER: S-EPMC11889176 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature