Devonian Sarcopterygian Fin-to-Limb Transition, Dipnoi Sisterhood, and the 440–0 Ma Crown Tetrapoda Total-Evidence Time-Tree Chronogram

Devonian Sarcopterygian Fin-to-Limb Transition, Dipnoi Sisterhood, and the 440–0 Ma Crown Tetrapoda Total-Evidence Time-Tree Chronogram A 64-taxon, 1.78 Mb Dual-Pass Blinded Dayhoff-6 + CAT-GTR + Partitioned Mkv + Fossilized Birth-Death synthesis resolves Dipnoi (lungfishes) as the 99.6%-supported sister clade to Tetrapoda at 418.4 Ma, traces the Devonian fin-to-limb transition across elpistostegalians (383.8 Ma) and polydactylous stegocephalians (373.4 Ma), and dates Crown Tetrapoda to 346.2 Ma. Canonical Preprint URL: https://crvscience.com/labs/preprints/tetrapod-fin-limb-timetree-preprint Open-Source Software Repository (GNU GPL-3.0): https://github.com/bpwhite/crvscience-labs