The macroevolutionary impact of an innovation reversal in ray-finned fishes
Chase Brownstein, Richard C. Harrington, Julia E. Wood, Ava Ghezelayagh, Laura R. V. Alencar, Martha M. Muñoz, Christine E. Thacker, Thomas J. Near
This paper shows how swim bladder loss in ray-finned fishes influenced diversification by enabling adaptation to deep sea and Southern Ocean environments, but also acted as a selective filter during past global warming events.
bioRxiv · Aug 29, 2026 · PreprintEvolutionary Biology