Two molecular datasets and fossil calibrations estimate modern-bird divergence times and historical biogeography.
Represented range0–0 Ma
RegionsGlobal fossil-calibrated phylogenetic model
CladesNeornithes · Neoaves
Claim ledger
divergence-time · medium
Bayesian fossil-calibrated analyses of clock-like exons and broader RAG sampling infer a modern-bird common ancestor near 95 Ma and rapid diversification around the K–Pg boundary; dates and geographic histories are model outputs conditioned on topology, calibrations and priors.